NSN 5310-00-770-3978 · NIIN 007703978 · Part number 53051
Am General Llc · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 34623
Government record, cited
NSN 5310-00-770-3978 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-770-3978. Manufacturer of record part number: 53051.
Also searched as5310-00-770-3978 ·
5310007703978 ·
NIIN 007703978 ·
00-770-3978 ·
FSC 5310 Nuts and Washers · CAGE 34623 · 53051 · 502203
The Washer,flat, cataloged under National Stock Number 5310-00-770-3978, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Am General Llc. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
5310-00-770-3978
Primary Part Number
53051
Item Name
Washer,flat
FSC / FSG
5310 / 53 — Nuts and Washers
Manufacturer
Am General Llc
Status
ACTIVE
Overall Diameter
0.562 INCHES NOMINAL IN
Cross-Sectional Shape Style
RECTANGULAR
Surface Treatment
CADMIUM OR ZINC OVERALL
Peripheral Shape Style
ROUND
Material
STEEL OVERALL
Center Hole Shape Style
ROUND
Hole Diameter
0.328 INCHES NOMINAL IN
Thickness
0.031 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
⇄Related Items5
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5325-01-054-5509SL19648-8A1POSSIBLE MATCH
RECEPTACLE,TURNLOCK FASTENER
Possible match (shared part number)Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok
5315-01-186-748553051POSSIBLE MATCH
PIN,STRAIGHT,HEADLESS
Possible match (shared part number)Barksdale, Inc
4320-01-374-4364POSSIBLE MATCH
CAP,HYD END,SPECIAL
Possible match (shared part number)
6220-01-417-1755502203POSSIBLE MATCH
PANEL,INDICATING,LIGHT TRANSMITT
Possible match (shared part number)Ftg Aerospace Inc. Div Ftg Aerospace Chatsworth
6515-01-686-55505022-03POSSIBLE MATCH
SPLINT,HAND
Possible match (shared part number)Deroyal Industries Inc
NSN 5310-00-770-3978 is a Washer,flat, manufactured by Am General Llc, classified under FSC 5310, Nuts and Washers. Status: active.
What part numbers are listed for NSN 5310-00-770-3978?
NSN 5310-00-770-3978 has 2 manufacturer part numbers on file: 53051 (Am General Llc), 502203 (Army Weapons Command Attn Amswe-Ree-S).
What NSN replaces 5310-00-770-3978?
5 possible matches (shared part number, not a government interchangeability claim): 5325-01-054-5509, 5315-01-186-7485, 4320-01-374-4364. Verify interchangeability with system specifications before substitution.
What are the specifications of 53051?
Key specifications for 53051: Overall Diameter: 0.562 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR; Surface Treatment: CADMIUM OR ZINC OVERALL; Peripheral Shape Style: ROUND. 8 specifications are documented in the U.S. Government catalog.
Is NSN 5310-00-770-3978 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.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.