Screw, Cap, Socket Head5305-01-645-2746

NSN 5305-01-645-2746 · NIIN 016452746

FSC 5305 — Screws · FSG 53 — Hardware and Abrasives

Government record, cited

Also searched as 5305-01-645-2746 · 5305016452746 · NIIN 016452746 · 01-645-2746 · FSC 5305 Screws

Nearby stock numbers ← 5305-01-645-2647 Screw, Machine · 5305-01-645-2793 Screw, Shoulder →

5305-01-645-2746 — Screws

Features

Screw,cap,socket Head — FSC 5305
Width Across Flats: 0.188 INCHES NOMINAL IN
Head Height: 0.250 INCHES NOMINAL IN
Fastener Length: 0.500 INCHES NOMINAL IN
Thread Length: 1.0 INCHES NOMINAL IN
Material Document and Classification: AMS5731 (UNS S66286) OR AMS5737 (UNS S66286) COLD WORKED AND AGE HARDENED TO MEET THE FASTENER REQUIREMENTS OF FF-S-86 AND NAS1351. ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Nominal Thread Diameter: 0.250 INCHES IN
Head Style: FLAT CHAMFER

Identification

NSN: 5305-01-645-2746
NIIN: 016452746
FSC: 5305 — Screws
FSG: 53 — Hardware and Abrasives

General Description

The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-645-2746, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 14 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	5305-01-645-2746
Item Name	Screw,cap,socket Head
FSC / FSG	5305 / 53 — Screws
Status	ACTIVE
Width Across Flats	0.188 INCHES NOMINAL IN
Head Height	0.250 INCHES NOMINAL IN
Fastener Length	0.500 INCHES NOMINAL IN
Thread Length	1.0 INCHES NOMINAL IN
Material Document and Classification	AMS5731 (UNS S66286) OR AMS5737 (UNS S66286) COLD WORKED AND AGE HARDENED TO MEET THE FASTENER REQUIREMENTS OF FF-S-86 AND NAS1351. ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Nominal Thread Diameter	0.250 INCHES IN
Head Style	FLAT CHAMFER
Thread Direction	RIGHT-HAND
Internal Drive Style	HEXAGON
Thread Class	3A A
Thread Quantity Per Inch	28
Material	STEEL OVERALL
Thread Series Designator	UNRF
Head Diameter	0.375 INCHES NOMINAL IN

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)
Criticality Code	X

Cross-Reference Index

No manufacturer part numbers on file in the U.S. Government catalog.

Reference documents

Reference	Meaning
NAS1351N4H8S	3/2 Design control — primary reference U.S. Government activity

No interchangeability data on file.

Other items in FSC 5305 — Screws

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

5305-00-001-5016

5305-00-001-5016 · Item name not on file

5305-00-001-9160

5305-00-001-9160 · Item name not on file

5305-00-001-9629

SCREW,ADJUSTING CLEVIS

5305-00-001-9742

5305-00-001-9742 · Item name not on file

5305-00-001-9768

SCREW,CAP,SOCKET HEAD

5305-00-003-4306

SCREW,MACHINE

5305-00-003-6694

5305-00-003-6694 · Item name not on file

5305-00-003-6753

5305-00-003-6753 · Item name not on file

Frequently Asked Questions

What is NSN 5305-01-645-2746?

NSN 5305-01-645-2746 is a Screw,cap,socket Head, classified under FSC 5305, Screws. Status: active.

What are the specifications of 5305-01-645-2746?

Key specifications for 5305-01-645-2746: Width Across Flats: 0.188 INCHES NOMINAL IN; Head Height: 0.250 INCHES NOMINAL IN; Fastener Length: 0.500 INCHES NOMINAL IN; Thread Length: 1.0 INCHES NOMINAL IN. 14 specifications are documented in the U.S. Government catalog.

Is NSN 5305-01-645-2746 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.

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