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NSN 5305-01-481-7257Government record, cited
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Screw, Cap, Socket Head5305-01-481-7257

NSN 5305-01-481-7257 · NIIN 014817257
FSC 5305 — Screws · FSG 53 — Hardware and Abrasives
Government record, cited
Also searched as  5305-01-481-7257 · 5305014817257 · NIIN 014817257 · 01-481-7257 · FSC 5305 Screws · 122-2298838 PIECE 243 · 701-2298824 PIECE 243 · 701-2298824
Nearby stock numbers  ·
L 1.500 INCHES MAXIMUM IN ⌀0.5000 INCHES IN UNIFIED NATIONAL COARSE (UNC) BOLT/SCREW PROFILE
5305-01-481-7257 — Screws
Features
  • Screw,cap,socket Head — FSC 5305
  • Width Across Flats: 0.375 INCHES NOMINAL IN
  • Head Height: 0.492 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
  • Fastener Length: 1.500 INCHES MAXIMUM IN
  • Thread Length: 1.500 INCHES MAXIMUM IN
  • Material Document and Classification: STL,GRADE5 MFR REF 1ST MATERIAL RESPONSE OVERALL
  • Nominal Thread Diameter: 0.5000 INCHES IN
  • Head Style: FLAT CHAMFER
Identification
  • NSN: 5305-01-481-7257
  • NIIN: 014817257
  • FSC: 5305 — Screws
  • FSG: 53 — Hardware and Abrasives
General Description

The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-481-7257, 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14 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-01-481-7257
Item NameScrew,cap,socket Head
FSC / FSG5305 / 53 — Screws
StatusACTIVE
Width Across Flats0.375 INCHES NOMINAL IN
Head Height0.492 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
Fastener Length1.500 INCHES MAXIMUM IN
Thread Length1.500 INCHES MAXIMUM IN
Material Document and ClassificationSTL,GRADE5 MFR REF 1ST MATERIAL RESPONSE OVERALL
Nominal Thread Diameter0.5000 INCHES IN
Head StyleFLAT CHAMFER
Thread DirectionRIGHT-HAND
Internal Drive StyleHEXAGON
Thread Class2A A
Thread Quantity Per Inch13
MaterialSTEEL OVERALL
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Head Diameter0.735 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
⇄ Related Items 6
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
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
ReferenceMeaning
122-2298838 PIECE 243 3/2 Design control — primary reference
U.S. Government activity
701-2298824 PIECE 243 5/2 Secondary reference
U.S. Government activity
701-2298824 D/9 Drawing number reference only
U.S. Government activity
Related Parts
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 5305-01-481-7257?

NSN 5305-01-481-7257 is a Screw,cap,socket Head, classified under FSC 5305, Screws. Status: active.

What NSN replaces 5305-01-481-7257?

6 possible matches (shared part number, not a government interchangeability claim): 5305-01-481-7260, 5305-01-481-7540, 5305-01-481-7541. Verify interchangeability with system specifications before substitution.

What are the specifications of 5305-01-481-7257?

Key specifications for 5305-01-481-7257: Width Across Flats: 0.375 INCHES NOMINAL IN; Head Height: 0.492 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN; Fastener Length: 1.500 INCHES MAXIMUM IN; Thread Length: 1.500 INCHES MAXIMUM IN. 14 specifications are documented in the U.S. Government catalog.

Is NSN 5305-01-481-7257 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.

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