MS51975-28

View detailed technical data, stock status, and sourcing information for: MS51975-28
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-914-4171

Item Name Code

22846

Assigment Date

01/01/1960 (66 years ago)

An externally threaded fastener whose threaded portion is of one nominal diameter, no 0 (0.060 in.) (1.5 mm) or larger. It has a round unthreaded neck or shank all or part of which is of greater diameter than the threaded portion. The head is designed to be driven with either a wrench or an inserted driver or both in sizes below no. 10 (0.190 in.) (5 mm) nominal diameter. No. 10 (0.190 in.) (5 mm) and larger sizes must be designed for any type of inserted driver, but may also provide for external wrenching of the head. A locking feature may be incorporated in the design of the head or threads. For items which are both shouldered and have an externally relieved body, use screw, externally relieved body. For items with a no. 10 (0.190 in.) (5 mm) or larger thread diameter without an inserted driver head, use bolt, shoulder. Excludes:bolt, internal wrenching and screw, cap, socket head.

3a thread class, flat chamfer head style, 0.595 inches minimum and 0.625 inches maximum thread length, right-hand thread direction, 1.350 inches minimum and 1.370 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: 0.595 inches minimum and 0.625 inches maximum
Fastener Length: 1.350 inches minimum and 1.370 inches maximum
Head Style: flat chamfer
Head Diameter: 0.729 inches minimum and 0.750 inches maximum
Head Height: 0.302 inches minimum and 0.312 inches maximum
Shoulder Diameter: 0.496 inches minimum and 0.498 inches maximum first shoulder
Shoulder Length: 0.745 inches minimum and 0.755 inches maximum first shoulder
Internal Drive Style: hexagon
End Item Identification: a4 bradley fighting vehicle; a3 bradley fighting vehicle
Nominal Thread Diameter: 0.375 inches
Width Across Flats: 0.250 inches nominal
Thread Quantity Per Inch: 16
Minimum Tensile Strength: 160000 pounds per square inch
Hardness Rating: 32.0 rockwell c minimum and 43.0 rockwell c maximum overall
Shoulder Shape: round first shoulder
Material: steel comp 4037 or steel comp 4137 or steel comp 4140 or steel comp 8630 or steel comp 8740 overall
Surface Treatment: cadmium and chromate overall
Surface Treatment Document And Classification: qq-p-416 ty 2 cl 3 fed spec single treatment response overall
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
5305-00-754-3139	No Name Available	04/23/1969

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
10388889	Shoulder Screw
2GL543	Shoulder Screw
709-5486661 ITEM 42	Shoulder Screw
MS16638-28	Shoulder Screw
MS51975-28	Shoulder Screw

FAQs

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

What is the FSCG of the NSN 5305-00-914-4171?

The FSCG of the NSN 5305-00-914-4171 is 5305

Does the NSN 5305-00-914-4171 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-914-4171 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 5305-00-914-4171 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-914-4171 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 5305-00-914-4171 was assigned to the Federal Catalog?

It was assigned 66 years ago, on Fri, Jan 1, 1960