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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Ordered on a Monday evening and arrived in New Zealand Friday afternoon. Very good prompt service and the compass was installed on the Saturday after calibration. Thanks Military Fasteners!

5.0

Brittany has always provided me with excellent service on phone calls and in emails! Brittany is always extremely helpful, friendly and she goes the extra mile to help! Thank you very much Brittany!!

5.0

Very fast response to RFQ (less than 1 day) very competitive pricing and low MOQ requirements

5.0

Military Fasteners had the best price and I received my order very quickly. I pretty much order all of my parts, etc. from Military Fasteners. Thanks

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