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5305-00-045-3181

Find complete technical information, availability, and procurement data for: 5305-00-045-3181

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5305-00-045-3181
Federal Supply Group
Hardware and Abrasives
Federal Supply Classification
5305 Screws
National Stock Number
5305-00-045-3181
Item Name Code
06657
Assigment Date
01/01/1961 (65 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.

flat countersunk head style, 3a thread class, 0.429 inches minimum and 0.578 inches maximum thread length, right-hand thread direction, 0.828 inches minimum and 0.875 inches maximum fastener length

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
0.429 inches minimum and 0.578 inches maximum
Fastener Length
0.828 inches minimum and 0.875 inches maximum
Head Style
flat countersunk
Head Diameter
0.447 inches minimum and 0.507 inches maximum
Internal Drive Style
cross recess type 1
End Item Identification
mrap cougar ambulance
Nominal Thread Diameter
0.250 inches
Thread Quantity Per Inch
28
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-p-416,ty 2,cl 3 fed spec all treatment responses
Thread Series Designator
unf

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN Name Date
5305-00-079-9962 No Name Available 07/26/1968

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
3MFR509-416R13 Machine Screw
MS24694-S100 Machine Screw
MS24694S100 Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-00-045-3181?
The FSCG of the NSN 5305-00-045-3181 is 5305
Does the NSN 5305-00-045-3181 have a Schedule B code assigned?
Yes, the Schedule B code is 7318152000
Does NSN 5305-00-045-3181 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 5305-00-045-3181 contain precious materials?
Item does not contain precious metal.
Does NSN 5305-00-045-3181 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 5305-00-045-3181 was assigned to the Federal Catalog?
It was assigned 65 years ago, on Sun, Jan 1, 1961

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