MS9557-18
Military Standard Machine Bolt
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Description:
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Fastener Length: 1-1/4", Thread: 1/4-28, Thread Length: 51/64", MS9557 series bolt
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MS9557-18 Datasheet Features and Specification
Thread Class:
3a
Surface Finish:
32.0 microinches threads
Surface Finish:
32.0 microinches grip
Surface Finish:
32.0 microinches bearing surface of head
Minimum Yield Strength:
85000 pounds per square inch
Min. Tensile Strength (psi):
130000 pounds per square inch
Material Specification:
Ams 5731 assn standard single material response
Material:
Iron alloy 660
Head Style:
Double hexagon w/hole
Head Height:
0.300 inches
Hardness Rating:
248.0 brinell standard and 341.0 brinell standard
Grip Length:
Between 0.440 inches and 0.500 inches
Features Provided:
Finished head
Fastener Length:
1.250 inches
Extended Washer Thickness:
Between 0.060 inches and 0.070 inches
Extended Washer Diameter:
0.438 inches
Thread Diameter:
0.250 inches
Thread Direction:
Right-hand
Thread Length:
Between 0.750 inches and 0.810 inches
Thread Qty Per Inch (tpi):
28
Thread Series Designator:
Unjf (fine thread with external controlled root radius)
Width Between Flats:
Between 0.305 inches and 0.313 inches
Quick Specs
| Thread Size | 1/4 |
| Thread Qty | 28 |
| Thread Series | UNJF |
| Thread Class | 3A |
| Material | Iron |
| Length | 1-1/4 |
Additional Information
| SKU / Model: | MS955718 |
| NSN: | 5306-00-106-8813 |
| FSC: | Bolts / 5306 |
| Product Series: | MS9557 |
| Pack Weight (Approx.) | 0.235 lb |
| Minimum Qty (MOQ): | 10 |
| ECCN: | EAR99 |
| National Motor Freight: | 093486, Bolts,nuts Or Screws, Noi (sub 3) |
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Download PDF Version MS9557-18_Military-Fasteners-com.pdf |
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Product code MS9557-18
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