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5305-00-267-8971

Find complete technical information, availability, and procurement data for: 5305-00-267-8971

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5305-00-267-8971
Federal Supply Group
Hardware and Abrasives
Federal Supply Classification
5305 Screws
National Stock Number
5305-00-267-8971
Item Name Code
06657
Assigment Date
01/01/1960 (66 years ago)

An externally threaded fastener designed for insertion into holes in assembled parts, for mating with a preformed internal thread and for tightening or releasing by torquing the head. The threaded and unthreaded portions are both of the same nominal diameter of 0.190 inch (5 mm) or larger. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. The thread length being the controlled dimension, the grip length is not specified. A locking feature may be incorporated in the design of the head or threads. The head is not designed to be held or driven with an inserted driver or by the thumb and fingers. Excludes:bolt,machine; bolt,externally relieved body; bolt,internal wrenching; and screw,cap,socket head.

0.375 inches minimum and 0.515 inches maximum thread length, right-hand thread direction, 0.953 inches minimum and 1.000 inches maximum fastener length, flat countersunk head style, 3a thread class

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Thread Class
3a
Thread Direction
right-hand
Thread Length
0.375 inches minimum and 0.515 inches maximum
Fastener Length
0.953 inches minimum and 1.000 inches maximum
Head Style
flat countersunk
Head Diameter
0.283 inches minimum and 0.332 inches maximum
Internal Drive Style
cross recess type 1
End Item Identification
mrap cougar ambulance
Nominal Thread Diameter
0.164 inches
Thread Quantity Per Inch
32
Minimum Tensile Strength
125000 pounds per square inch
Hardness Rating
26.0 rockwell c minimum and 32.0 rockwell c maximum
Countersink Angle
99.0 degrees minimum and 101.0 degrees maximum
Screw Material
steel comp 8630 or steel comp 4037
Screw Material Document And Classification
mil-s-6050 mil spec 1st material response or ams 6300 assn std 2nd material response
Screw Surface Treatment
cadmium and chromate
Screw Surface Treatment Document And Classification
qq-b-416,ty 2,cl 3 fed spec all treatment responses
Thread Series Designator
unc

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN Name Date
5305-00-207-0182 No Name Available 04/01/1985
5305-00-722-6630 No Name Available 05/18/1967

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number Name
933.45.17.007 Machine Screw
AN509-832R10 Machine Screw
MS24694-S7 Machine Screw
Z00.N5150624007 Machine Screw

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 5305-00-267-8971?
The FSCG of the NSN 5305-00-267-8971 is 5305
Does the NSN 5305-00-267-8971 have a Schedule B code assigned?
Yes, the Schedule B code is 7318152000
Does NSN 5305-00-267-8971 require demilitarization?
Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.
Does NSN 5305-00-267-8971 contain precious materials?
Precious metal content is unknown
Does NSN 5305-00-267-8971 contain hazardous materials?
Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
When the NSN 5305-00-267-8971 was assigned to the Federal Catalog?
It was assigned 66 years ago, on Fri, Jan 1, 1960

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