ST3M571-5D21

Bolt

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Description:

Fastener Length: 1-7/8", Thread: 1/4-24, Thread Length: 37/64"

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ST3M571-5D21 Datasheet Features and Specification

Thread Class:
3a
Thread Direction:
Right-hand
Thread Length:
0.516 inches minimum and 0.586 inches maximum
Fastener Length:
1.838 inches minimum and 1.888 inches maximum
Head Style:
Double hexagon w/hole
Head Height:
0.338 inches minimum and 0.358 inches maximum
Width Between Flats:
0.367 inches minimum and 0.376 inches maximum
Extended Washer Diameter:
0.521 inches minimum and 0.531 inches maximum
Extended Washer Thickness:
0.072 inches minimum and 0.092 inches maximum
Grip Diameter:
0.3115 inches minimum and 0.3120 inches maximum
Shank Unthreaded Hole Diameter:
0.076 inches minimum first hole and 0.081 inches maximum first hole
Thread Diameter:
0.312 inches
Grip Length:
1.302 inches minimum and 1.322 inches maximum
Thready Qty Per Inch (tpi):
24
Min. Tensile Strength (psi):
220000 pounds per square inch
Distance From Head Largest Bearing Surface To Shank Hole Center:
1.630 inches minimum first hole and 1.690 inches maximum first hole
Material:
Steel corrosion resisting overall
Surface Treatment:
Passivate overall
Thread Series Designator:
Unjf
Quick Specs
Thread Size 1/4
Thread Qty 24
Material Stainless Steel
Length 1-7/8

Additional Information

SKU / Model: ST3M5715D21
NSN: 5306-00-281-7172
FSC: Bolts / 5306
Product Series: ST3M571
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 1 EA
Schedule B: 7318.15.8085
ECCN: EAR99
National Motor Freight: 093486, Bolts,nuts Or Screws, Noi (sub 3)
Download PDF Version
ST3M571-5D21_Military-Fasteners-com.pdf
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ST3M571-8D46

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ST3M571-8-18

Fastener Length: 1-29/32", Thread: 1/2-20, Thread Length: 25/32"

ST3M571-8-12

Fastener Length: 1-17/32", Thread: 1/2-20, Thread Length: 25/32"

ST3M571-7H28

Fastener Length: 2-15/32", Hole Diameter: ", Thread: 3/8-20, Thread Length: 23/32"

ST3M571-6H23

Fastener Length: 2-1/16", Hole Diameter: ", Thread: 3/8-24, Thread Length: 5/8"

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I have only ordered from Military Fasteners once so far, but I can't even express how happy I was with our order. As a purchasing manager who deals with government contracts (and the strict requirements that come with them), I was beyond thrilled with the flawless paperwork that was provided (free of charge) with the products we ordered. Lindsey was a peach to interact with, and we received our order next day; one of the perks of having a warehouse close by. I am very much so looking forward to to ordering from them again! Response from the owner3 years ago Thank you so much Holly for the kind words. We constantly try and think of new ways to improve the experience for our customers. We strive to make the package presentation upon arrival how we would want as a customer. It truly is an honor to service our customers that support our government and military branches.

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I've never received an incorrect order from ACS, even when dealing with small hardware such as nuts, washers, screws, etc. Shipment is always fast and with reasonable shipment prices for my needs. Even my smallest of orders is processed and ship quickly. I'm a long-time ACS customer and I expect I will be for a long time.

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You ship them right out to me via US mail in a padded envelope. This makes you my go-to company for all my parts needs. When I've asked questions on-line about an item they are answered thoroughly and usually the same day. Thanks Military Fasteners!

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Great service when calling in orders, very knowledgeable staff. The web site is also very user friendly for ordering and shipping is quick. I give it a 5 star rating.

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