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935.63.31.008

View detailed technical data, stock status, and sourcing information for: 935.63.31.008

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935.63.31.008
Federal Supply Group
Hardware and Abrasives
Federal Supply Classification
5305 Screws
National Stock Number
5305-00-921-0918
Item Name Code
06657
Assigment Date
12/11/1965 (60 years ago)

An externally threaded fastener whose threaded portion is of one nominal diameter, no 0 (0.060 in./1.5 mm) or larger, designed to be held or driven with either a wrench or an inserted driver or both (excluding internal socket or internal multiple spline types), in sizes below no. 10 (0.190 in./5 mm). No. 10 and larger sizes must have a head designed for any type inserted driver (excluding internal socket or internal multiple spline types), but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. Excludes:bolt, clevis; bolt, externally relieved body; screw, externally relieved body; and screw, assembled washer. See also, screw, instrument; bolt, machine; bolt, internal wrenching; and screw, cap socket head.

3a thread class, 0.516 inches minimum and 0.563 inches maximum fastener length, 0.345 inches minimum and 0.484 inches maximum thread length, right-hand thread direction, pan head style

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
0.345 inches minimum and 0.484 inches maximum
Fastener Length
0.516 inches minimum and 0.563 inches maximum
Head Style
pan
Head Diameter
0.306 inches minimum and 0.322 inches maximum
Head Height
0.105 inches minimum and 0.115 inches maximum
Internal Drive Style
cross recess type 1
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
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-p-416,type 2,class 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
5305-00-165-5358 No Name Available 09/01/1977
5305-00-834-6370 No Name Available 01/01/1983

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
124-3003-196 Machine Screw
2010744 Machine Screw
5305PL0142471 Machine Screw
935.63.31.008 Machine Screw
MS27039-0808 Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-00-921-0918?
The FSCG of the NSN 5305-00-921-0918 is 5305
Does the NSN 5305-00-921-0918 have a Schedule B code assigned?
Yes, the Schedule B code is 7318152000
Does NSN 5305-00-921-0918 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 5305-00-921-0918 contain precious materials?
Item does not contain precious metal.
Does NSN 5305-00-921-0918 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 5305-00-921-0918 was assigned to the Federal Catalog?
It was assigned 60 years ago, on Sat, Dec 11, 1965

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