ST3M557-7-7

View detailed technical data, stock status, and sourcing information for: ST3M557-7-7
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-536-7266

Item Name Code

29294

Assigment Date

09/22/1974 (51 years ago)

0.631 inches minimum and 0.681 inches maximum thread length, flat countersunk head style, 3a thread class, right-hand thread direction, 1.079 inches minimum and 1.109 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: 0.631 inches minimum and 0.681 inches maximum
Fastener Length: 1.079 inches minimum and 1.109 inches maximum
Head Style: flat countersunk
Head Diameter: 0.612 inches minimum and 0.672 inches maximum
Grip Diameter: 0.4365 inches minimum and 0.4370 inches maximum
Internal Drive Style: high-torque
Nominal Thread Diameter: 0.438 inches
Grip Length: 0.428 inches minimum and 0.448 inches maximum
Thread Quantity Per Inch: 20
Countersink Angle: 99.0 degrees minimum and 101.0 degrees maximum
Material: steel comp h11 overall
Material Document And Classification: ams 6487 assn std single material response overall
Surface Treatment: passivate overall
Thread Series Designator: unjf

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
11907-7L7	Close Tolerance Screw
11923-7-7	Close Tolerance Screw
HT4024L7-7	Close Tolerance Screw
HT4027-7-7	Close Tolerance Screw
ST3M455-7L7	Close Tolerance Screw
ST3M557-7-7	Close Tolerance Screw
WC4024L7-7	Close Tolerance Screw
WC4027-7-7	Close Tolerance Screw

FAQs

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

What is the FSCG of the NSN 5305-00-536-7266?

The FSCG of the NSN 5305-00-536-7266 is 5305

Does the NSN 5305-00-536-7266 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-536-7266 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 5305-00-536-7266 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-536-7266 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 5305-00-536-7266 was assigned to the Federal Catalog?

It was assigned 51 years ago, on Sun, Sep 22, 1974