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4 1/2 inch length Machine Screws
Machine Screws are uniformly threaded screws which are designed to be screwed into pre-drilled, pre-threaded holes, or in conjunction with a nut, usually with a diameter less than 1/4inch. Larger diameter machine screws with a hex head are usually referred to as machine bolts.
199,697 Machine Screw, showing 200, (click on any line for more information)
| Search Results Sponsored by ISSCO, Inc., your source for Machine Screws. For more results, visit isscoinc.com | ||||||||
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| Supplier | Loc | Type | Material | Finish | Size | Description | Qty | |
| ISSCO | MO | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/2-13 x 4 1/2 | slotted flat 18-8 stainless | 880 |
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| ISSCO | MO | Machine Screw | Steel | Zinc/Clear | 1/2-13 x 4 1/2 | mach slotted round z/p | 225 |
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| NAPPCO | TX | Machine Screw | Steel | Zinc/Clear | #8-32 x 4 1/2 | rd slotted m/s steel zinc pltd 8-32x4-1/2 | 350 |
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| MESAFAST | CA | Machine Screw | Steel | Black Oxide | 5/16-18 x 4 1/2 | 5/16-18x4-1/2 phil round & wax & wax | 196.0 |
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| NAPPCO | TX | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #10-32 x 4 1/2 | phil pan m/s s/s 18-8 10-32x4-1/2 | 2 |
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| MAINSOURC | NH | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 4 1/2 | slotted round m/s 18-8 ss | 770 |
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| Jackson | MS | Machine Screw | Steel | Zinc/Clear | 1/4 x 4 1/2 | nc round slotted m/s | 600 |
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| MAINSOURC | NH | Machine Screw | Steel | Plain | #10-32 x 4 1/2 | 10-32x4 1/2 slotted round m/s stl z/clr | 100 |
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| Weaver | WA | Machine Screw | Steel | Zinc/Clear | 5/16-18 x 4 1/2 | 5/16-18x4 1/2 phil flat machine screw zinc | 390 |
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| Brikksen | FL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 4 1/2 | 5/16-18 x 4-1/2 phillips pan m/s ss | 200 |
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| Brikksen | FL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 4 1/2 | 1/4-20 x 4-1/2 phillips ovalal m/s ss | inquire |
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| Brikksen | FL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 4 1/2 | 1/4-20 x 4-1/2 phillips flat head m/s 18-8 ss 10 per small bag 5 small bags per master pack-generic brand | inquire |
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| Brikksen | FL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 4 1/2 | 1/4-20 x 4 1/2 phillips pan m/s ss/chrome- | 2000 |
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| Brikksen | FL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 4 1/2 | 1/4-20 x 4-1/2 phillips flat m/s ss full thread | 5000 |
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| Brikksen | FL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 4 1/2 | 1/4-20 x 4-1/2 phillips flat m/s ss full thread | inquire |
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| Brikksen | FL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 4 1/2 | 5/16-18 x 4-1/2 phillips pan m/s ss | inquire |
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| Brikksen | FL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/8-16 x 4 1/2 | 3/8-16 x 4-1/2 phillips flat m/s ss | 20 |
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| Brikksen | FL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 4 1/2 | 1/4-20 x 4-1/2 phillips flat head m/s 18-8 ss 10 per small bag 5 small bags per master pack-generic brand | 900 |
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| Brikksen | FL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 4 1/2 | 5/16-18 x 4-1/2 phillips flat m/s ss | inquire |
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| Brikksen | FL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/8-16 x 4 1/2 | 3/8-16 x 4-1/2 phillips flat m/s ss | inquire |
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| Brikksen | FL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 4 1/2 | 1/4-20 x 4 1/2 phillips truss m/s ss low contour | 1000 |
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| Brikksen | FL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 4 1/2 | 1/4-20 x 4 1/2 phillips truss m/s ss low contour | inquire |
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| Brikksen | FL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 4 1/2 | 1/4-20x4-1/2 phillips flat m/s ss/ch- | inquire |
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| Brikksen | FL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/8-16 x 4 1/2 | 3/8-16 x 4-1/2 phillips flat machine screw 18-8ss/chrome- | 700 |
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| Brikksen | FL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 4 1/2 | 1/4-20 x 4-1/2 phillips flat head m/s 18-8 ss 10 per small bag 5 small bags per master pack-generic brand | inquire |
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| Brikksen | FL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 4 1/2 | 1/4-20 x 4 1/2 phillips pan m/s ss/chrome- | inquire |
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| Brikksen | FL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 4 1/2 | 1/4-20x4-1/2 phillips flat m/s ss/ch- | inquire |
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| Brikksen | FL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 4 1/2 | 1/4-20 x 4-1/2 phillips ovalal head m/s 18-8 ss 10 per small bag 5 small bags per master pack-generic brand | inquire |
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| Brikksen | FL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 4 1/2 | 1/4-20 x 4-1/2 slotted round m/s ss | inquire |
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| Cal Fastenrs | CA | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 4 1/2 | 1/4-20 x 4 1/2 slotted round m/s slotted round ms | 200 |
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| Endries | WI | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 4 1/2 | 1/4-20x4-1/2 slotted round head machine screw zinc | 600 |
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| FasSpcMfg | FL | Machine Screw | Silicon Bronze | Plain | 5/16-18 x 4 1/2 | 5/16-18 x 4-1/2 flat m/s silicon bronze 2 | 3 |
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| FasSpcMfg | FL | Machine Screw | Steel | Plain | #10-32 x 4 1/2 | 10-32 x 4-1/2 slotted flat head machine screw steel full thread | 24 |
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| OneMonroe | NC | Machine Screw | Steel | Zinc/Clear | #10-24 x 4 1/2 | 10-24 x 4 1/2 slottedround m/s pkg plated pkg qty 100 carton 5 | 100 |
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| OneMonroe | NC | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 4 1/2 | 1/4-20 x 4 1/2 slottedround m/s pkg plated pkg qty 50 carton 26 | 100 |
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| OneMonroe | NC | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 4 1/2 | 1/4-20 x 4 1/2 slotted round head zinc plated machine screw | 100 |
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| OneMonroe | NC | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 4 1/2 | 1/4-20 x 4 1/2 slotted flat head zinc plated machine screw | 800 |
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| OneMonroe | NC | Machine Screw | Steel | Zinc/Clear | 5/16-18 x 4 1/2 | 5/16-18 x 4 1/2 slottedround m/s pkg plated pkg qty 50 carton 5 | 50 |
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| OneMonroe | NC | Machine Screw | Steel | Zinc/Clear | #10-9 x 4 1/2 | 10-9x4-1/2 phillips flat hd pb 2/3 thread stl & zinc | 21500 |
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| Alma Bolt | MI | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 4 1/2 | 1/4-20 x 4 1/2 | st. st. flat phillips m/s | 5 |
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| Alma Bolt | MI | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/8-16 x 4 1/2 | 3/8-16 x 4 1/2 | st. st. flat slottedm/s | 76 |
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| Alma Bolt | MI | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 4 1/2 | 5/16-18 x 4 1/2 | st. st. flat phillips m/s | 46 |
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| Alma Bolt | MI | Machine Screw | Plain | 1/2-13 x 4 1/2 | 1/2-13 x 4 1/2 | flat slotted machine screw | 100 |
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| Alma Bolt | MI | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 4 1/2 | 1/4-20 x 4 1/2 | st. st. flat slottedm/s | 157 |
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| Alma Bolt | MI | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 4 1/2 | 1/4-20 x 4 1/2 | st. st. truss phillips m/s | 66 |
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| Alma Bolt | MI | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 4 1/2 | 1/4-20 x 4 1/2 | st. st. flat slottedm/s | 96 |
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| Alma Bolt | MI | Machine Screw | Plain | 1/4-20 x 4 1/2 | 1/4-20 x 4 1/2 slotted | hex washer machine screw | 2200 |
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| Alma Bolt | MI | Machine Screw | Plain | 5/16-18 x 4 1/2 | 5/16-18 x 4 1/2 | flat slotted machine screw | 150 |
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| Alma Bolt | MI | Machine Screw | Steel | Plain | #12 x 4 1/2 | #12x4 1/2 pan philip type s rawl | 350 |
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| NutsBolts | NE | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 4 1/2 | 1/4-20 x 4 1/2 slotted zp | 100 |
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| OneMonroe | MA | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 4 1/2 | 1/4-20 x 4 1/2 slotted flat head zinc plated machine screw | 800 |
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| American | WI | Machine Screw | Grade 8 | Phosphate | 1/4-20 x 4 1/2 | 1/4-20x4-1/2 nc unsl ind hex m/s gr 8 phos & oil | 375 |
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| Scheinert | NJ | Machine Screw | Steel | Zinc/Clear | 3/8-16 x 4 1/2 | 3/8-16x4-1/2 flat slotted m/s zinc clear | 1295 |
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| American | WI | Machine Screw | Steel | Zinc/Clear | #8-32 x 4 1/2 | #8-32x4-1/2 nc slotted round hd m/s zinc | 385 |
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| Raw Produ | NJ | Machine Screw | Silicon Bronze | Plain | 1/4-20 x 4 1/2 | slotted flat head ms silicon bronze 1/4-20 x 4-1/2 | 500 |
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| Raw Produ | NJ | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 4 1/2 | phillips ovalal head ms 304 ss 1/4-20 x 4-1/2 | 95 |
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| Raw Produ | NJ | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/8-16 x 4 1/2 | phillips pan head ms 304 ss 3/8-16 x 4-1/2 | 53 |
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| Raw Produ | NJ | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 4 1/2 | phillips flat head ms 304 ss 1/4-20 x 4-1/2 | 226 |
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| Raw Produ | NJ | Machine Screw | 316, 317, A4 Stainless | Plain | 1/4-20 x 4 1/2 | phillips flat head ms 316 ss 1/4-20 x 4-1/2 | 500 |
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| Raw Produ | NJ | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/8-16 x 4 1/2 | phillips flat head ms 304 ss 3/8-16 x 4-1/2 | 75 |
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| Raw Produ | NJ | Machine Screw | Silicon Bronze | Plain | 1/2-13 x 4 1/2 | slotted flat head ms silicon bronze 1/2-13 x 4-1/2 | 500 |
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| Raw Produ | NJ | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 4 1/2 | phillips pan head ms 304 ss 1/4-20 x 4-1/2 | 254 |
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| Raw Produ | NJ | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 4 1/2 | phillips truss head ms 304 ss 1/4-20 x 4-1/2 | 87 |
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| American | NY | Machine Screw | Steel | Zinc/Black | #10-32 x 4 1/2 | 10/32x4-1/2 phil round m/s black | 500 |
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| American | NY | Machine Screw | Steel | Plain | #6-32 x 4 1/2 | slotted round m/s | 144 |
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| American | NY | Machine Screw | Brass | Plain | #8-32 x 4 1/2 | slotted round m/s pl | 60 |
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| American | NY | Machine Screw | Steel | Zinc/Yellow | #8-32 x 4 1/2 | slotted pan m/s yellow | 1400 |
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| American | NY | Machine Screw | Steel | Zinc/Clear | #10-24 x 4 1/2 | slotted round m/s pl | 2650 |
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| American | NY | Machine Screw | Steel | Plain | #10-24 x 4 1/2 | slotted flat m/s | 1000 |
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| American | NY | Machine Screw | Steel | Cadmium | 1/4-20 x 4 1/2 | slotted fillister m/s cad pl | 450 |
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| American | NY | Machine Screw | Steel | Plain | 1/4-20 x 4 1/2 | slotted flat m/s | 3100 |
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| American | NY | Machine Screw | Steel | Zinc/Clear | 5/16-18 x 4 1/2 | slotted round m/s pl | 150 |
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| American | NY | Machine Screw | Steel | Zinc/Yellow | 5/16-18 x 4 1/2 | slotted flat m/s yellow | 200 |
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| RCFast | AZ | Machine Screw | Steel | Zinc/Clear | #10-32 x 4 1/2 | slotted round m/s stl 1 | 1100 |
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| Wurth Ind | IN | Machine Screw | Steel | Zinc/Clear | #8-32 x 4 1/2 | round head machine screw st zn slotted 8-32x4 1/2 steel zinc/clear | 1393 |
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| Wurth Ind | IN | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #10-32 x 4 1/2 | round head machine screw slotted 10-32x4 1/2 300 stainless (a1,a2, 18-8,304,310 etc.) plain | 3215 |
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| Wurth Ind | IN | Machine Screw | Steel | Zinc/Clear | #10-24 x 4 1/2 | round head machine screw st zn slotted 10-24x4 1/2 steel zinc/clear | 317 |
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| Wurth Ind | IN | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 4 1/2 | round head machine screw st zn ph 1/4-20x4 1/2 steel zinc/clear | 1085 |
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| WINA | MN | Machine Screw | Brass | Brass Plated | 8-32 x 4 1/2 | round head machine screw st zn slotted 8-32x4 1/2 | 1393 |
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| WINA | MN | Machine Screw | Brass | Brass Plated | 10-32 x 4 1/2 | round head machine screw 18 8 slotted 10-32x4 1/2 | 3215 |
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| WINA | MN | Machine Screw | Brass | Brass Plated | 1/4-20 x 4 1/2 | round head machine screw st zn ph 1/4-20x4 1/2 | 1085 |
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| WINA | MN | Machine Screw | Brass | Brass Plated | 10-24 x 4 1/2 | round head machine screw st zn slotted 10-24x4 1/2 | 317 |
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| Mansco | MI | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Black Oxide | 1/4-20 x 4-1/2 pan phil m/s 18-8 s.s. blk ox | 400 |
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| Ababa | CA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #10-32 x 4 1/2 | 10-32 x 4 1/2 inch p-pan m-scr s/s b18.6.3 | 240 |
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| Ababa | CA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 4 1/2 | 1/4-20 x 4 1/2 phil-pan mach screw s/s b18.6.3 | 36 |
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| Weaver | WA | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 4 1/2 | 1/4-20x4 1/2 slotted flat machine screw zinc | 583 |
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| EASTERN SCREW | RI | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #8-32 x 4 1/2 | 8-32 x 4-1/2 phillips flat 18-8 3 thread | 160 |
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| Olander | CA | Machine Screw | Steel | Zinc/Yellow | 1/4-20 x 4 1/2 phil rd stl zn ylw | 76 |
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| Olander | CA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #8-32 x 4 1/2 | 8-32 x 4 1/2 ph pan sst rohs () () | 25 |
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| Ababa | CA | Machine Screw | Steel | Zinc/Clear | #10-24 x 4 1/2 | 10-24 x 4 1/2 s-rnd m/s stl znc b18.6.3 | 16 |
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| Century | NY | Machine Screw | Steel | Plain | 8-32 x 4 1/2 phil pan steel blox | 459 |
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| Hodell | OH | Machine Screw | Steel | Zinc/Clear | #8-32 x 4 1/2 | 8-32x4 1/2 slotted round m/s zinc | 2283 |
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| Weaver | WA | Machine Screw | Steel | Zinc/Clear | 5/16-18 x 4 1/2 | 5/16-18x4 1/2 phil flat machine screw zinc | 490 |
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| Delta | TX | Machine Screw | Steel | Plain | 5/8-11 x 4 1/2 | slotted flat m/s plain 5/8-11x4 1/2 | 118 |
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| Hodell | OH | Machine Screw | Steel | Zinc/Clear | #10-32 x 4 1/2 | 10-32x4 1/2 spcl phil round m/s zncat 4.5 inches (-0.0 + .031). | 250 |
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| Hodell | OH | Machine Screw | Steel | Zinc/Clear | #10-32 x 4 1/2 | 10-32x4 1/2 spcl phil round m/s znc at 4.5 inches (-0.0 + .031). | 250 |
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| OSSCO | RI | Machine Screw | Steel | Zinc/Clear | 3/8-16 x 4 1/2 | 3/8-16x4 1/2 slotted round m/s plated b18.6.3 | 21 |
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| Valley Nu | WA | Machine Screw | Steel | Zinc/Black | 5/16-18 x 4 1/2 | nc round slotted zb | 81 |
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| Valley Nu | WA | Machine Screw | Steel | Zinc/Black | #10-24 x 4 1/2 | nc round slotted zb | 187 |
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| Valley Nu | WA | Machine Screw | Steel | Zinc/Black | 5/16-18 x 4 1/2 | nc flat slotted zb | 100 |
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| Valley Nu | WA | Machine Screw | Steel | Zinc/Black | 1/4-20 x 4 1/2 | nc round slotted zb | 48 |
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| Valley Nu | WA | Machine Screw | Steel | Zinc/Black | 1/4-20 x 4 1/2 | nc flat phil zb | 138 |
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