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NSN 5310-00-209-3872Government record, cited
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Washer, Lock5310-00-209-3872

NSN 5310-00-209-3872 · NIIN 002093872
FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives
Government record, cited
Also searched as  5310-00-209-3872 · 5310002093872 · NIIN 002093872 · 00-209-3872 · FSC 5310 Nuts and Washers
Nearby stock numbers  ·
AF 0.255 INCHES MINIMUM AND 0.263 INCHES MAXIMUM IN NUT + WASHER
5310-00-209-3872 — Nuts and Washers
Features
  • Washer,lock — FSC 5310
  • Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Style Designator: SPLIT HELICAL-RIGHT HAND
  • Outside Diameter: 0.495 INCHES NOMINAL IN
  • Material Thickness: 0.084 INCHES NOMINAL IN
  • Surface Treatment: CADMIUM OVERALL
  • Material: STEEL OVERALL
  • Hole Diameter: 0.255 INCHES MINIMUM AND 0.263 INCHES MAXIMUM IN
Identification
  • NSN: 5310-00-209-3872
  • NIIN: 002093872
  • FSC: 5310 — Nuts and Washers
  • FSG: 53 — Hardware and Abrasives
General Description

The Washer,lock, cataloged under National Stock Number 5310-00-209-3872, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 7 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 8 items share a part number with this NSN in the catalog (possible match — not a government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
NSN5310-00-209-3872
Item NameWasher,lock
FSC / FSG5310 / 53 — Nuts and Washers
StatusACTIVE
Surface Treatment Document and ClassificationQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Style DesignatorSPLIT HELICAL-RIGHT HAND
Outside Diameter0.495 INCHES NOMINAL IN
Material Thickness0.084 INCHES NOMINAL IN
Surface TreatmentCADMIUM OVERALL
MaterialSTEEL OVERALL
Hole Diameter0.255 INCHES MINIMUM AND 0.263 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 8
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5970-00-715-241410427 POSSIBLE MATCH
INSULATOR,BUSHING
Possible match (shared part number)Grimes Aerospace Company
4720-00-764-6785 POSSIBLE MATCH
HOSE ASSEMBLY,NONMETALLIC
Possible match (shared part number)
2520-00-767-577886FT474 POSSIBLE MATCH
BOOT,POWER TRANSMISSION COMPONEN
Possible match (shared part number)Oshkosh Defense Llc
2530-01-197-518610427 POSSIBLE MATCH
BOOT
Possible match (shared part number)Hme, Inc. Dba Hme Ahrens-Fox
5330-01-276-001910427 POSSIBLE MATCH
SEAL,PLAIN
Possible match (shared part number)Allied Systems Company Dba Allied Systems Co
5365-01-278-9463 POSSIBLE MATCH
PLUG,MACHINE THREAD
Possible match (shared part number)
5330-01-373-4664 POSSIBLE MATCH
SEAL,PLAIN
Possible match (shared part number)
3130-01-625-471110427 POSSIBLE MATCH
BEARING UNIT,PLAIN
Possible match (shared part number)Greystone, Inc.
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
ReferenceMeaning
10427 3/9 Design control — primary reference
U.S. Government activity
Related Parts
5970-00-715-2414POSSIBLE MATCH
INSULATOR,BUSHING
10427
4720-00-764-6785POSSIBLE MATCH
HOSE ASSEMBLY,NONMETALLIC
2520-00-767-5778POSSIBLE MATCH
BOOT,POWER TRANSMISSION COMPONEN
86FT474
2530-01-197-5186POSSIBLE MATCH
BOOT
10427
5330-01-276-0019POSSIBLE MATCH
SEAL,PLAIN
10427
5365-01-278-9463POSSIBLE MATCH
PLUG,MACHINE THREAD
5330-01-373-4664POSSIBLE MATCH
SEAL,PLAIN
3130-01-625-4711POSSIBLE MATCH
BEARING UNIT,PLAIN
10427

Frequently Asked Questions

What is NSN 5310-00-209-3872?

NSN 5310-00-209-3872 is a Washer,lock, classified under FSC 5310, Nuts and Washers. Status: active.

What NSN replaces 5310-00-209-3872?

8 possible matches (shared part number, not a government interchangeability claim): 5970-00-715-2414, 4720-00-764-6785, 2520-00-767-5778. Verify interchangeability with system specifications before substitution.

What are the specifications of 5310-00-209-3872?

Key specifications for 5310-00-209-3872: Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Style Designator: SPLIT HELICAL-RIGHT HAND; Outside Diameter: 0.495 INCHES NOMINAL IN; Material Thickness: 0.084 INCHES NOMINAL IN. 7 specifications are documented in the U.S. Government catalog.

Is NSN 5310-00-209-3872 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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