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NSN 5315-01-256-9791Government record, cited
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Pin, Straight, Headless5315-01-256-9791

NSN 5315-01-256-9791 · NIIN 012569791
FSC 5315 — Nails, Machine Keys, and Pins · FSG 53 — Hardware and Abrasives
Government record, cited
Also searched as  5315-01-256-9791 · 5315012569791 · NIIN 012569791 · 01-256-9791 · FSC 5315 Nails, Machine Keys, and Pins · MIL-P-21143/1 · M21143/1-49 · M21143/1-49
Nearby stock numbers  ·
L 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN ⌀0.1875 INCHES MINIMUM AND 0.1877 INCHES MAXIMUM IN BOLT/SCREW PROFILE
5315-01-256-9791 — Nails, Machine Keys, and Pins
Features
  • Pin,straight,headless — FSC 5315
  • Surface Finish: 16.0 MICROINCHES OUTSIDE DIAMETER
  • Surface Treatment Document and Classification: ASTM A380 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
  • First End Style: SQUARE
  • Material Document and Classification: ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
  • Pin Overall Diameter: 0.1875 INCHES MINIMUM AND 0.1877 INCHES MAXIMUM IN
  • Pin Overall Length: 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN
  • Second End Relationship with First End: IDENTICAL
Identification
  • NSN: 5315-01-256-9791
  • NIIN: 012569791
  • FSC: 5315 — Nails, Machine Keys, and Pins
  • FSG: 53 — Hardware and Abrasives
General Description

The Pin,straight,headless, cataloged under National Stock Number 5315-01-256-9791, is classified within Federal Supply Class 5315 (Nails, Machine Keys, and Pins) of the Hardware and Abrasives group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 11 items share a part number with this NSN in the catalog (possible match — not a government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
NSN5315-01-256-9791
Item NamePin,straight,headless
FSC / FSG5315 / 53 — Nails, Machine Keys, and Pins
StatusACTIVE
Surface Finish16.0 MICROINCHES OUTSIDE DIAMETER
Surface Treatment Document and ClassificationASTM A380 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
First End StyleSQUARE
Material Document and ClassificationASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Pin Overall Diameter0.1875 INCHES MINIMUM AND 0.1877 INCHES MAXIMUM IN
Pin Overall Length0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN
Second End Relationship with First EndIDENTICAL
Surface TreatmentPASSIVATE OVERALL
MaterialSTEEL COMP 303 OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
⇄ Related Items 11
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5315-01-283-9934NASM21143/1-2 POSSIBLE MATCH
PIN,STRAIGHT,HEADLESS
Possible match (shared part number)National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5315-01-285-7792 POSSIBLE MATCH
PIN,STRAIGHT,HEADLESS
Possible match (shared part number)
5315-01-291-6637 POSSIBLE MATCH
PIN,STRAIGHT,HEADLESS
Possible match (shared part number)
5315-01-303-1021 POSSIBLE MATCH
PIN,STRAIGHT,HEADLESS
Possible match (shared part number)
5315-01-307-1854 POSSIBLE MATCH
PIN,STRAIGHT,HEADLESS
Possible match (shared part number)
5315-01-326-1280M21143/1-67 POSSIBLE MATCH
PIN,STRAIGHT,HEADLESS
Possible match (shared part number)National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5315-01-326-5074 POSSIBLE MATCH
PIN,STRAIGHT,HEADLESS
Possible match (shared part number)
5315-01-336-2450 POSSIBLE MATCH
PIN,STRAIGHT,HEADLESS
Possible match (shared part number)
5315-01-336-5516M21143/1-18 POSSIBLE MATCH
PIN,STRAIGHT,HEADLESS
Possible match (shared part number)National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5315-01-343-6507 POSSIBLE MATCH
PIN,STRAIGHT,HEADLESS
Possible match (shared part number)
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
ReferenceMeaning
MIL-P-21143/1 4/1 Identification reference
U.S. Government activity
M21143/1-49 2/2 Government specification standardization
U.S. Government activity
M21143/1-49 C/1 Advisory reference — outside the item-of-supply concept
Zf Industrieantriebe Witten Gmbh
Related Parts
5315-01-283-9934POSSIBLE MATCH
PIN,STRAIGHT,HEADLESS
NASM21143/1-2
5315-01-285-7792POSSIBLE MATCH
PIN,STRAIGHT,HEADLESS
5315-01-291-6637POSSIBLE MATCH
PIN,STRAIGHT,HEADLESS
5315-01-303-1021POSSIBLE MATCH
PIN,STRAIGHT,HEADLESS
5315-01-307-1854POSSIBLE MATCH
PIN,STRAIGHT,HEADLESS
5315-01-326-1280POSSIBLE MATCH
PIN,STRAIGHT,HEADLESS
M21143/1-67
5315-01-326-5074POSSIBLE MATCH
PIN,STRAIGHT,HEADLESS
5315-01-336-2450POSSIBLE MATCH
PIN,STRAIGHT,HEADLESS
5315-01-336-5516POSSIBLE MATCH
PIN,STRAIGHT,HEADLESS
M21143/1-18
5315-01-343-6507POSSIBLE MATCH
PIN,STRAIGHT,HEADLESS
5315-01-344-1782POSSIBLE MATCH
PIN,STRAIGHT,HEADLESS
M21143/1-17

Frequently Asked Questions

What is NSN 5315-01-256-9791?

NSN 5315-01-256-9791 is a Pin,straight,headless, classified under FSC 5315, Nails, Machine Keys, and Pins. Status: active.

What NSN replaces 5315-01-256-9791?

11 possible matches (shared part number, not a government interchangeability claim): 5315-01-283-9934, 5315-01-285-7792, 5315-01-291-6637. Verify interchangeability with system specifications before substitution.

What are the specifications of 5315-01-256-9791?

Key specifications for 5315-01-256-9791: Surface Finish: 16.0 MICROINCHES OUTSIDE DIAMETER; Surface Treatment Document and Classification: ASTM A380 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; First End Style: SQUARE; Material Document and Classification: ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 9 specifications are documented in the U.S. Government catalog.

Is NSN 5315-01-256-9791 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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