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5305-01-157-1987

Find complete technical information, availability, and procurement data for: 5305-01-157-1987

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5305-01-157-1987
Federal Supply Group
Hardware and Abrasives
Federal Supply Classification
5305 Screws
National Stock Number
5305-01-157-1987
Item Name Code
41756
Assigment Date
06/30/1983 (43 years ago)

A high strength, 160,000 pounds per square inch (1100 megapascals) minimum tensile strength externally threaded fastener designed for use in applications involving great shear stress. The head is designed to accommodate an external wrench or driver. The head is not designed to be held or driven with an inserted driver, nor is it designed for rotation by the thumb and fingers. The unthreaded portion is of specific grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001) of an inch (0.025 mm) or less of a specific diameter for items one inch (25 mm) or less in diameter. Items over one inch (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015) of an inch (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001) of an inch (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the screw thread standards, fed std h28 and/or other nationally recognized standards. A locking feature may be incorporated in the design of the head or threads. See bolt, machine and bolt, clevis.

19.20 millimeters minimum and 20.80 millimeters maximum fastener length, 7.4 millimeters minimum and 8.7 millimeters maximum head diameter, casehardened features provided, oval countersunk head style, 3.4 millimeters nominal spline major diameter

Product Characteristics

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

Fastener Length
19.20 millimeters minimum and 20.80 millimeters maximum
Head Style
oval countersunk
Head Diameter
7.4 millimeters minimum and 8.7 millimeters maximum
Spline Major Diameter
3.4 millimeters nominal
Features Provided
casehardened
Nonmachine Thread Style
gimlet point (type a, ab or ba)
Countersink Angle
90.0 degrees minimum and 92.0 degrees maximum
Nonmachine Nominal Thread Diameter
4.2 millimeters
Material
steel overall
Material Document And Classification
aisi assn std all material responses overall
Surface Treatment
chromate overall
Surface Treatment Document And Classification
gm 4255-m mfr ref single treatment response overall

Replaces National Stock Numbers

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

NSN Name Date
5305-01-160-3943 No Name Available 08/01/1985

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
11501149 Tapping Screw
11504477 Tapping Screw
9417987 Tapping Screw

FAQs

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

What is the FSCG of the NSN 5305-01-157-1987?
The FSCG of the NSN 5305-01-157-1987 is 5305
Does the NSN 5305-01-157-1987 have a Schedule B code assigned?
Yes, the Schedule B code is 7318140000
Does NSN 5305-01-157-1987 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 5305-01-157-1987 contain precious materials?
Item does not contain precious metal.
Does NSN 5305-01-157-1987 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 5305-01-157-1987 was assigned to the Federal Catalog?
It was assigned 43 years ago, on Thu, Jun 30, 1983

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