PartsTable TECHNICAL DATA SHEET

NSN 5305-01-481-7250Government record, cited

Screw, Cap, Socket Head5305-01-481-7250

NSN 5305-01-481-7250 · NIIN 014817250

FSC 5305 — Screws · FSG 53 — Hardware and Abrasives

Government record, cited

Also searched as 5305-01-481-7250 · 5305014817250 · NIIN 014817250 · 01-481-7250 · FSC 5305 Screws · 122-2298838 PIECE 187 · 701-2298824 · 701-2298824 PIECE 187

Nearby stock numbers ← 5305-01-481-7212 Screw, Cap, Socket Head · 5305-01-481-7254 Screw, Shoulder →

5305-01-481-7250 — 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: 0.625 INCHES MAXIMUM IN
Thread Length: 0.625 INCHES NOMINAL IN
Material Document and Classification: STL,GRADE5 MFR REF 1ST MATERIAL RESPONSE OVERALL
Nominal Thread Diameter: 0.312 INCHES IN
Head Style: FLAT CHAMFER

Identification

NSN: 5305-01-481-7250
NIIN: 014817250
FSC: 5305 — Screws
FSG: 53 — Hardware and Abrasives

General Description

The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-481-7250, 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14 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 8 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	5305-01-481-7250
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	0.625 INCHES MAXIMUM IN
Thread Length	0.625 INCHES NOMINAL IN
Material Document and Classification	STL,GRADE5 MFR REF 1ST MATERIAL RESPONSE OVERALL
Nominal Thread Diameter	0.312 INCHES IN
Head Style	FLAT CHAMFER
Thread Direction	RIGHT-HAND
Internal Drive Style	HEXAGON
Thread Class	2A A
Thread Quantity Per Inch	18
Material	STEEL OVERALL
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

⇄ Related Items 8

Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.

5305-01-481-7256122-2298838 PIECE 215 POSSIBLE MATCH

SCREW,CAP,SOCKET HEAD

Possible match (shared part number)Naval Ship Systems Command

5305-01-481-7257122-2298838 PIECE 243 POSSIBLE MATCH

SCREW,CAP,SOCKET HEAD

Possible match (shared part number)Naval Ship Systems Command

5305-01-481-7260122-2298838 PIECE 289 POSSIBLE MATCH

SCREW,CAP,SOCKET HEAD

Possible match (shared part number)Naval Ship Systems Command

5305-01-481-7540122-2298838 PIECE 317 POSSIBLE MATCH

SCREW,CAP,SOCKET HEAD

Possible match (shared part number)Naval Ship Systems Command

5305-01-481-7541122-2298838 PIECE 339 POSSIBLE MATCH

SCREW,CAP,SOCKET HEAD

Possible match (shared part number)Naval Ship Systems Command

5305-01-481-7542122-2298838 PIECE 341 POSSIBLE MATCH

SCREW,CAP,SOCKET HEAD

Possible match (shared part number)Naval Ship Systems Command

5305-01-481-7544122-2298838 PIECE 356 POSSIBLE MATCH

SCREW,CAP,SOCKET HEAD

Possible match (shared part number)Naval Ship Systems Command

5305-01-481-7546 POSSIBLE MATCH

SCREW,CAP,SOCKET HEAD

Possible match (shared part number)

Cross-Reference Index

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

Reference documents

Reference	Meaning
122-2298838 PIECE 187	3/2 Design control — primary reference U.S. Government activity
701-2298824	D/9 Drawing number reference only U.S. Government activity
701-2298824 PIECE 187	5/2 Secondary reference U.S. Government activity

Related Parts

5305-01-481-7256POSSIBLE MATCH

SCREW,CAP,SOCKET HEAD

122-2298838 PIECE 215

5305-01-481-7257POSSIBLE MATCH

SCREW,CAP,SOCKET HEAD

122-2298838 PIECE 243

5305-01-481-7260POSSIBLE MATCH

SCREW,CAP,SOCKET HEAD

122-2298838 PIECE 289

5305-01-481-7540POSSIBLE MATCH

SCREW,CAP,SOCKET HEAD

122-2298838 PIECE 317

5305-01-481-7541POSSIBLE MATCH

SCREW,CAP,SOCKET HEAD

122-2298838 PIECE 339

5305-01-481-7542POSSIBLE MATCH

SCREW,CAP,SOCKET HEAD

122-2298838 PIECE 341

5305-01-481-7544POSSIBLE MATCH

SCREW,CAP,SOCKET HEAD

122-2298838 PIECE 356

5305-01-481-7546POSSIBLE MATCH

SCREW,CAP,SOCKET HEAD

Frequently Asked Questions

What is NSN 5305-01-481-7250?

NSN 5305-01-481-7250 is a Screw,cap,socket Head, classified under FSC 5305, Screws. Status: active.

What NSN replaces 5305-01-481-7250?

8 possible matches (shared part number, not a government interchangeability claim): 5305-01-481-7256, 5305-01-481-7257, 5305-01-481-7260. Verify interchangeability with system specifications before substitution.

What are the specifications of 5305-01-481-7250?

Key specifications for 5305-01-481-7250: Width Across Flats: 0.250 INCHES NOMINAL IN; Head Height: 0.306 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN; Fastener Length: 0.625 INCHES MAXIMUM IN; Thread Length: 0.625 INCHES NOMINAL IN. 14 specifications are documented in the U.S. Government catalog.

Is NSN 5305-01-481-7250 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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