NSN 5310-00-018-7372 · NIIN 000187372 · Part number 188-13
Lockheed Martin Corporation Div Rms - Mitchel Field · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 56232
Government record, cited
NSN 5310-00-018-7372 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-018-7372. Manufacturer of record part number: 188-13.
Also searched as5310-00-018-7372 ·
5310000187372 ·
NIIN 000187372 ·
00-018-7372 ·
FSC 5310 Nuts and Washers · CAGE 56232 · 188-13 · 187372
Material Document and Classification: QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Cross-Sectional Shape Style: RECTANGULAR
Surface Treatment: PASSIVATE OVERALL
Peripheral Shape Style: ROUND
Material: STEEL COMP 321 OVERALL
Center Hole Shape Style: ROUND
Identification
NSN: 5310-00-018-7372
NIIN: 000187372
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: 188-13
Manufacturer: Lockheed Martin Corporation Div Rms - Mitchel Field
General Description
The Washer,flat, cataloged under National Stock Number 5310-00-018-7372, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Lockheed Martin Corporation Div Rms - Mitchel Field. Government technical data includes 9 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. 7 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
5310-00-018-7372
Primary Part Number
188-13
Item Name
Washer,flat
FSC / FSG
5310 / 53 — Nuts and Washers
Manufacturer
Lockheed Martin Corporation Div Rms - Mitchel Field
Status
ACTIVE
Overall Diameter
0.813 INCHES NOMINAL IN
Material Document and Classification
QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Cross-Sectional Shape Style
RECTANGULAR
Surface Treatment
PASSIVATE OVERALL
Peripheral Shape Style
ROUND
Material
STEEL COMP 321 OVERALL
Center Hole Shape Style
ROUND
Hole Diameter
0.406 INCHES NOMINAL IN
Thickness
0.065 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 Items7
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4820-00-055-9697POSSIBLE MATCH
VALVE,ANGLE
Possible match (shared part number)
5950-00-190-4592278-2102-020POSSIBLE MATCH
COIL,RADIO FREQUENCY
Possible match (shared part number)Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
6515-00-204-887818-813POSSIBLE MATCH
PROTECTOR,TRANSDUCER,PHYSIOLOGIC
Possible match (shared part number)Cobe Laboratories Inc
1210-00-320-04091396601POSSIBLE MATCH
SIGHT
Possible match (shared part number)Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5365-00-328-1025187372POSSIBLE MATCH
RING,EXTERNALLY THREADED
Possible match (shared part number)Airmotive Carburetor
5998-01-319-8368187372POSSIBLE MATCH
CIRCUIT CARD ASSEMBLY
Possible match (shared part number)Northrop Grumman Systems Corporation
4720-01-448-68811B7372POSSIBLE MATCH
HOSE ASSEMBLY,NONMETALLIC
Possible match (shared part number)Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
NSN 5310-00-018-7372 is a Washer,flat, manufactured by Lockheed Martin Corporation Div Rms - Mitchel Field, classified under FSC 5310, Nuts and Washers. Status: active.
What part numbers are listed for NSN 5310-00-018-7372?
NSN 5310-00-018-7372 has 2 manufacturer part numbers on file: 188-13 (Lockheed Martin Corporation Div Rms - Mitchel Field), 187372 (Army Weapons Command Attn Amswe-Ree-S).
What NSN replaces 5310-00-018-7372?
7 possible matches (shared part number, not a government interchangeability claim): 4820-00-055-9697, 5950-00-190-4592, 6515-00-204-8878. Verify interchangeability with system specifications before substitution.
What are the specifications of 188-13?
Key specifications for 188-13: Overall Diameter: 0.813 INCHES NOMINAL IN; Material Document and Classification: QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Surface Treatment: PASSIVATE OVERALL. 9 specifications are documented in the U.S. Government catalog.
Is NSN 5310-00-018-7372 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.