MS9557-18

Military Standard Machine Bolt

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Description:

Fastener Length: 1-1/4", Thread: 1/4-28, Thread Length: 51/64", MS9557 series bolt

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MS9557-18
MS9557-18
MS9557-18
Add to Cart Up to qty 190 ships same day if ordered before 4pm EST
MS9557-18 Price:
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$4.62 Each
Quantity:
Pre-packaged bag qty: 10 ea
* Sold in increments of 10
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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)
Download PDF Version
MS9557-18_Military-Fasteners-com.pdf
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Product Image Gallery

Product code MS9557-18
MS9557-18
MS9557-18
MS9557-18

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I sent in my online order then within a minute I realized I left off an item. I sent a message that requested an item be added to avoid a second shipping cost. I received a reply the next morning that the item I wanted had been added successfully and my order would be delivered as promised. Thanks to your staff for the flexibility and the help with my online order.

5.0

Fast, friendly and professional service that only Military Fasteners can provide with every order that I have placed with them.

5.0

Ive been purchasing aircraft parts and hardware from Military Fasteners for over 4 years. That alone should speak volumes. Ive always received excellent customer service and the product quality is unrivaled. When I think of aircraft parts and accessories, Im thinking Military Fasteners. Keep up the excellent work folks! Regards, Ed

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My new David Clark headset arrived earlier than expected and everything was perfect. Whole order/delivery experience was excellent.

4.0