GS551P4-921

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Description:

Fastener Length: 1-9/32", Thread: 1/4-28, Thread Length: 27/64"

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GS551P4-921 Datasheet Features and Specification

Thread Class:
2a
Thread Direction:
Right-hand
Thread Length:
0.406 inches minimum and 0.436 inches maximum
Fastener Length:
1.266 inches minimum and 1.296 inches maximum
Head Style:
Flat countersunk
Head Diameter:
0.357 inches nominal
Shoulder Diameter:
0.254 inches minimum first shoulder and 0.256 inches maximum first shoulder
Shoulder Length:
0.796 inches minimum first shoulder and 0.826 inches maximum first shoulder
Internal Drive Style:
Slot
Thread Diameter:
0.250 inches
Thready Qty Per Inch (tpi):
28
Countersink Angle:
99.0 degrees minimum and 101.0 degrees nominal
Shoulder Shape:
Round first shoulder
Special Features:
Half of top surface of head painted orange
Material:
Steel comp 4037 overall
Surface Treatment:
Cadmium overall and chromate overall
Surface Treatment Specification:
Qq-p-416,type 2,class 3 fed spec single treatment response overall
Thread Series Designator:
Unf
Quick Specs
Thread Size 1/4
Thread Qty 28
Material Steel
Length 1-9/32

Additional Information

SKU / Model: GS551P4921
NSN: 5305-00-151-8660
FSC: Screws / 5305
Product Series: GS551P4
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 5 EA
Schedule B: 7318.15.6080
ECCN: 9A991
National Motor Freight: 093486, Bolts,nuts Or Screws, Noi (sub 3)
Download PDF Version
GS551P4-921_Military-Fasteners-com.pdf
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More GS551P4 machine screws

GS551P4-801

Fastener Length: 1-5/32", Thread: 1/4-28, Thread Length: 7/16"

GS551P4-741

Fastener Length: 1-3/64", Thread: 1/4-28, Thread Length: 3/8"

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Extremely fast shipping and an excellent product. Will use again.

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Awesome customer service !

5.0

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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Very speedy order processing and reasonable shipping time. Its almost like walking next door to a favorite aircraft supply house.

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