PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

M21143/2-128Pin,straight,headless

National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use · NSN 5315-01-343-8477 · FSC 5315 · No Item Name Available
Verified by PartsTable
NSN 5315-01-343-8477 — this item is cataloged by the U.S. Government under National Stock Number 5315-01-343-8477. Primary manufacturer part number: M21143/2-128.
Features
  • Pin,straight,headless — FSC 5315
  • First End Style: SQUARE
  • Second End Relationship with First End: IDENTICAL
  • Material: STEEL COMP 303 OVERALL
  • Pin Overall Length: 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
  • Pin Overall Diameter: 0.2186 INCHES MINIMUM AND 0.2188 INCHES MAXIMUM IN
  • 3 verified cross-references
  • Primary manufacturer: National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
Applications
  • Applications requiring Steel Comp 303 Overall construction
General Description

The Pin,straight,headless, cataloged under National Stock Number 5315-01-343-8477, is classified within Federal Supply Class 5315 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5315-01-343-8477
Primary Part NumberM21143/2-128
Item NamePin,straight,headless
FSC / FSG5315 / 53 — No Item Name Available
ManufacturerNational Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
StatusACTIVE
First End StyleSQUARE
Second End Relationship with First EndIDENTICAL
MaterialSTEEL COMP 303 OVERALL
Pin Overall Length0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
Pin Overall Diameter0.2186 INCHES MINIMUM AND 0.2188 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5315-00-823-8767 INTERCHANGEABLE
Pin,straight,headless
5315-00-987-0867 INTERCHANGEABLE
Pin,straight,headless
5315-01-049-4800 INTERCHANGEABLE
Pin,straight,headless
5315-01-255-6652 INTERCHANGEABLE
Pin,straight,headless
5315-01-269-4473 INTERCHANGEABLE
Pin,straight,headless
5315-01-271-8431 INTERCHANGEABLE
Pin,straight,headless
5315-01-285-4083 INTERCHANGEABLE
Pin,straight,headless
5315-01-285-7142 INTERCHANGEABLE
Pin,straight,headless
5315-01-324-8900 INTERCHANGEABLE
Pin,straight,headless
5315-01-334-3814 INTERCHANGEABLE
Pin,straight,headless
Cross-Reference Index
Part NumberManufacturer
MIL-P-21143/2 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M21143/2-128 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M21143/2-128 PRIMARY National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
Related Parts
5315-00-823-8767INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
5315-00-987-0867INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
5315-01-049-4800INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
5315-01-255-6652INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
5315-01-269-4473INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
5315-01-271-8431INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
5315-01-285-4083INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
5315-01-285-7142INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
5315-01-324-8900INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
5315-01-334-3814INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
5315-01-351-1962INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
5315-01-352-2821INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS

Frequently Asked Questions

What is NSN 5315-01-343-8477?

NSN 5315-01-343-8477 is a Pin,straight,headless, manufactured by National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use, classified under FSC 5315 (No Item Name Available). Status: active.

What are the part numbers for NSN 5315-01-343-8477?

NSN 5315-01-343-8477 has 3 cross-referenced part numbers: MIL-P-21143/2 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M21143/2-128 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M21143/2-128 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use).

What NSN replaces 5315-01-343-8477?

There are 12 known substitutes for 5315-01-343-8477: 5315-00-823-8767, 5315-00-987-0867, 5315-01-049-4800 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of M21143/2-128?

Key specifications for M21143/2-128: First End Style: SQUARE; Second End Relationship with First End: IDENTICAL; Material: STEEL COMP 303 OVERALL; Pin Overall Length: 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN. 5 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com