PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

SR-21Pin,cotter

Tennsmith Inc · NSN 5315-01-549-0334 · FSC 5315 · No Item Name Available
Verified by PartsTable
NSN 5315-01-549-0334 — this item is cataloged by the U.S. Government under National Stock Number 5315-01-549-0334. Primary manufacturer part number: SR-21.
Features
  • Pin,cotter — FSC 5315
  • 1 verified cross-reference
  • Primary manufacturer: Tennsmith Inc
Applications
  • General assembly and fastening
  • Structural repair and reinforcement
  • Facility maintenance hardware
General Description

The Pin,cotter, cataloged under National Stock Number 5315-01-549-0334, is classified within Federal Supply Class 5315 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Tennsmith Inc. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5315-01-549-0334
Primary Part NumberSR-21
Item NamePin,cotter
FSC / FSG5315 / 53 — No Item Name Available
ManufacturerTennsmith Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
6685-00-524-9210 INTERCHANGEABLE
Thermometer,indicating,capillary
5325-00-579-78255R2-1 INTERCHANGEABLE
Receptacle,turnlock Fastener
Howmet Global Fastening Systems Inc Div Camloc Products
6685-00-628-9303 INTERCHANGEABLE
Thermometer,indicating,capillary
5961-00-712-3938232-1133P4 INTERCHANGEABLE
Semiconductor Device,diode
Raytheon Company Div Corp
Cross-Reference Index
Part NumberManufacturer
SR-21 Tennsmith Inc (USA)
Related Parts
6685-00-524-9210INTERCHANGEABLE
THERMOMETER,INDICATING,CAPILLARY
5325-00-579-7825INTERCHANGEABLE
RECEPTACLE,TURNLOCK FASTENER
5R2-1
6685-00-628-9303INTERCHANGEABLE
THERMOMETER,INDICATING,CAPILLARY
5961-00-712-3938INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
232-1133P4

Frequently Asked Questions

What is NSN 5315-01-549-0334?

NSN 5315-01-549-0334 is a Pin,cotter, manufactured by Tennsmith Inc, classified under FSC 5315 (No Item Name Available). Status: active.

What are the part numbers for NSN 5315-01-549-0334?

NSN 5315-01-549-0334 has 1 cross-referenced part number: SR-21 (Tennsmith Inc).

What NSN replaces 5315-01-549-0334?

There are 4 known substitutes for 5315-01-549-0334: 6685-00-524-9210, 5325-00-579-7825, 6685-00-628-9303 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of SR-21?

Key specifications for SR-21: Part Name Assigned by Controlling Agency: SPLIT PIN, GEAR; End Item Identification: FORMING MACH MTL SLIP ROLL SR30. 2 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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