PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21031Pin,straight,headless

Hydro-Aire Aerospace Corp · NSN 5315-00-218-9671 · FSC 5315 · No Item Name Available
Verified by PartsTable
NSN 5315-00-218-9671 — this item is cataloged by the U.S. Government under National Stock Number 5315-00-218-9671. Primary manufacturer part number: 21031.
Features
  • Pin,straight,headless — FSC 5315
  • First End Style: SQUARE
  • Second End Relationship with First End: IDENTICAL
  • Material: STEEL OVERALL
  • Hardness Rating: 50.0 ROCKWELL C MINIMUM AND 55.0 ROCKWELL C MAXIMUM OVERALL
  • Pin Overall Length: 0.295 INCHES MINIMUM AND 0.305 INCHES MAXIMUM IN
  • 1 verified cross-reference
  • Primary manufacturer: Hydro-Aire Aerospace Corp
Applications
  • Applications requiring Steel Overall construction
General Description

The Pin,straight,headless, cataloged under National Stock Number 5315-00-218-9671, is classified within Federal Supply Class 5315 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Hydro-Aire Aerospace Corp. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, 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
NSN5315-00-218-9671
Primary Part Number21031
Item NamePin,straight,headless
FSC / FSG5315 / 53 — No Item Name Available
ManufacturerHydro-Aire Aerospace Corp
StatusACTIVE
First End StyleSQUARE
Second End Relationship with First EndIDENTICAL
MaterialSTEEL OVERALL
Hardness Rating50.0 ROCKWELL C MINIMUM AND 55.0 ROCKWELL C MAXIMUM OVERALL
Pin Overall Length0.295 INCHES MINIMUM AND 0.305 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5310-00-182-5936210-3-1 INTERCHANGEABLE
Nut,sheet Spring
Republic Fastener Mfg. Corp. Dba Arconic Fastening Systems
5945-00-188-5614SCB42401 INTERCHANGEABLE
Relay,electromagnetic
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5935-00-192-1433MS3108B361P INTERCHANGEABLE
Connector,plug,electrical
Sae International Dba Sae International
5977-00-228-7075SCD61062-1 INTERCHANGEABLE
Brush,electrical Contact
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5995-00-636-138221031 INTERCHANGEABLE
Cable Assembly,special Purpose,e
Lockheed Martin Corporation Div Rms
5950-00-842-443015362 INTERCHANGEABLE
Reactor
Magnetek Inc Lighting Products Group
3030-00-858-3625S210-31 INTERCHANGEABLE
Belt,flat
Psi-Peripheral Support
5935-01-017-5892896955-1 INTERCHANGEABLE
Adapter,connector
Raytheon Company Dba Raytheon Co
5905-01-047-1484 INTERCHANGEABLE
Resistor,fixed,wire Wound,induct
5340-01-095-376021031 INTERCHANGEABLE
Marking,switch Cove
Smiths Aerospace, Inc., Electronic Systems-Grand Rapids
Cross-Reference Index
Part NumberManufacturer
21031 PRIMARY Hydro-Aire Aerospace Corp (USA)
Related Parts
5310-00-182-5936INTERCHANGEABLE
NUT,SHEET SPRING
210-3-1
5945-00-188-5614INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
SCB42401
5935-00-192-1433INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
MS3108B361P
5977-00-228-7075INTERCHANGEABLE
BRUSH,ELECTRICAL CONTACT
SCD61062-1
5995-00-636-1382INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
21031
5950-00-842-4430INTERCHANGEABLE
REACTOR
15362
3030-00-858-3625INTERCHANGEABLE
BELT,FLAT
S210-31
5935-01-017-5892INTERCHANGEABLE
ADAPTER,CONNECTOR
896955-1
5905-01-047-1484INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND,INDUCT
5340-01-095-3760INTERCHANGEABLE
MARKING,SWITCH COVE
21031
3439-01-191-5052INTERCHANGEABLE
WELDING POWDER,METALLIC OVERLAY
21031
4930-01-193-8781INTERCHANGEABLE
PIERCER,LOWER
2-1031

Frequently Asked Questions

What is NSN 5315-00-218-9671?

NSN 5315-00-218-9671 is a Pin,straight,headless, manufactured by Hydro-Aire Aerospace Corp, classified under FSC 5315 (No Item Name Available). Status: active.

What are the part numbers for NSN 5315-00-218-9671?

NSN 5315-00-218-9671 has 1 cross-referenced part number: 21031 (Hydro-Aire Aerospace Corp).

What NSN replaces 5315-00-218-9671?

There are 12 known substitutes for 5315-00-218-9671: 5310-00-182-5936, 5945-00-188-5614, 5935-00-192-1433 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21031?

Key specifications for 21031: First End Style: SQUARE; Second End Relationship with First End: IDENTICAL; Material: STEEL OVERALL; Hardness Rating: 50.0 ROCKWELL C MINIMUM AND 55.0 ROCKWELL C MAXIMUM OVERALL. 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