PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

0188-7Washer,flat

Lockheed Martin Corporation Div Rms - Mitchel Field · NSN 5310-00-275-1347 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-275-1347 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-275-1347. Primary manufacturer part number: 0188-7.
Features
  • Washer,flat — FSC 5310
  • Material: STEEL COMP 302 OVERALL
  • Thickness: 0.031 INCHES NOMINAL IN
  • Material Document and Classification: QQ-S-00766,CLASS 302 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Peripheral Shape Style: ROUND
  • Overall Diameter: 0.328 INCHES NOMINAL IN
  • Center Hole Shape Style: ROUND
  • Cross-Sectional Shape Style: RECTANGULAR
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 302 Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-275-1347, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Lockheed Martin Corporation Div Rms - Mitchel Field. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-275-1347
Primary Part Number0188-7
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerLockheed Martin Corporation Div Rms - Mitchel Field
StatusCANCELLED
MaterialSTEEL COMP 302 OVERALL
Thickness0.031 INCHES NOMINAL IN
Material Document and ClassificationQQ-S-00766,CLASS 302 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Peripheral Shape StyleROUND
Overall Diameter0.328 INCHES NOMINAL IN
Center Hole Shape StyleROUND
Cross-Sectional Shape StyleRECTANGULAR
Hole Diameter0.148 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 8
5360-00-048-6576118369 INTERCHANGEABLE
Spring,helical,compression
Honeywell International Inc Div Aerospace-South Bend (bendix Dr)
5310-00-515-824330723 INTERCHANGEABLE
Washer,flat
Raytheon Company Dba Raytheon
5815-00-916-86906002-534 INTERCHANGEABLE
Hammer,stop
Raytheon Company Div Rmd Strategic
5935-00-930-2667 INTERCHANGEABLE
Connector,receptacle,electrical
2530-00-932-7410AE118369 INTERCHANGEABLE
Shield,seal
Augusta Engine Parts, Inc. Dba Augusta Engine Parts, Inc.
5310-01-025-3484 INTERCHANGEABLE
Washer,flat
4730-01-391-3878P4MC4 INTERCHANGEABLE
Adapter,straight,pipe to Tube
Parker-Hannifin Corp Div Parflex Division
5342-01-706-135501887 INTERCHANGEABLE
Clamp,loop
End of the Road, Inc.
Cross-Reference Index
Part NumberManufacturer
310-0046-00 Wrought Washer Mfg., Inc. (USA)
C0188-7 Rohde & Schwarz Usa, Inc. (USA)
10121235 Nimikkeistokeskus Ncb Finland (FIN)
0188-7 PRIMARY Lockheed Martin Corporation Div Rms - Mitchel Field (USA)
310-0046-000 PRIMARY Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA)
118369 PRIMARY Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA)
310-0046-000 Wrought Washer Mfg., Inc. (USA)
0188-7 Honeywell International Inc. Dba Honeywell International (USA)
Related Parts
5360-00-048-6576INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
118369
5310-00-515-8243INTERCHANGEABLE
WASHER,FLAT
30723
5815-00-916-8690INTERCHANGEABLE
HAMMER,STOP
6002-534
5935-00-930-2667INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
2530-00-932-7410INTERCHANGEABLE
SHIELD,SEAL
AE118369
5310-01-025-3484INTERCHANGEABLE
WASHER,FLAT
4730-01-391-3878INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE
P4MC4
5342-01-706-1355INTERCHANGEABLE
CLAMP,LOOP
01887

Frequently Asked Questions

What is NSN 5310-00-275-1347?

NSN 5310-00-275-1347 is a Washer,flat, manufactured by Lockheed Martin Corporation Div Rms - Mitchel Field, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-275-1347?

NSN 5310-00-275-1347 has 8 cross-referenced part numbers: 310-0046-00 (Wrought Washer Mfg., Inc.), C0188-7 (Rohde & Schwarz Usa, Inc.), 10121235 (Nimikkeistokeskus Ncb Finland), 0188-7 (Lockheed Martin Corporation Div Rms - Mitchel Field), 310-0046-000 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems) and 3 more.

What NSN replaces 5310-00-275-1347?

There are 8 known substitutes for 5310-00-275-1347: 5360-00-048-6576, 5310-00-515-8243, 5815-00-916-8690 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 0188-7?

Key specifications for 0188-7: Material: STEEL COMP 302 OVERALL; Thickness: 0.031 INCHES NOMINAL IN; Material Document and Classification: QQ-S-00766,CLASS 302 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Peripheral Shape Style: ROUND. 8 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-275-1347 still in active supply?

NSN 5310-00-275-1347 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com