Screw, Cap, Socket Head5305-01-159-4489

NSN 5305-01-159-4489 · NIIN 011594489

FSC 5305 — Screws · FSG 53 — Hardware and Abrasives

Government record, cited

Also searched as 5305-01-159-4489 · 5305011594489 · NIIN 011594489 · 01-159-4489 · FSC 5305 Screws · 144 · 00144

Nearby stock numbers ← 5305-01-159-4488 Screw, Cap, Socket Head · 5305-01-159-4490 →

5305-01-159-4489 — Screws

Features

Screw,cap,socket Head — FSC 5305
Width Across Flats: 0.250 INCHES NOMINAL IN
Head Height: 0.306 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
Fastener Length: 1.250 INCHES NOMINAL IN
Nominal Thread Diameter: 0.312 INCHES IN
Head Style: FLAT CHAMFER
Thread Direction: RIGHT-HAND
Internal Drive Style: HEXAGON

Identification

NSN: 5305-01-159-4489
NIIN: 011594489
FSC: 5305 — Screws
FSG: 53 — Hardware and Abrasives

General Description

The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-159-4489, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	5305-01-159-4489
Item Name	Screw,cap,socket Head
FSC / FSG	5305 / 53 — Screws
Status	ACTIVE
Width Across Flats	0.250 INCHES NOMINAL IN
Head Height	0.306 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
Fastener Length	1.250 INCHES NOMINAL IN
Nominal Thread Diameter	0.312 INCHES IN
Head Style	FLAT CHAMFER
Thread Direction	RIGHT-HAND
Internal Drive Style	HEXAGON
Thread Class	3A A
Thread Quantity Per Inch	18
Thread Series Designator	UNIFIED NATIONAL COARSE (UNC)
Head Diameter	0.457 INCHES MINIMUM AND 0.469 INCHES MAXIMUM 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
144	3/9 Design control — primary reference Stanley Black & Decker, Inc. Dba Stanley Hydraulic Tools Div Stanley Hydraulic Tools
00144	5/9 Secondary reference Stanley Black & Decker, Inc. Dba Stanley Hydraulic Tools Div Stanley Hydraulic Tools

Frequently Asked Questions

What is NSN 5305-01-159-4489?

NSN 5305-01-159-4489 is a Screw,cap,socket Head, classified under FSC 5305, Screws. Status: active.

What are the specifications of 5305-01-159-4489?

Key specifications for 5305-01-159-4489: Width Across Flats: 0.250 INCHES NOMINAL IN; Head Height: 0.306 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN; Fastener Length: 1.250 INCHES NOMINAL IN; Nominal Thread Diameter: 0.312 INCHES IN. 11 specifications are documented in the U.S. Government catalog.

Is NSN 5305-01-159-4489 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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