PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

5702-201-20Washer,flat

Seastrom Manufacturing Co Inc · NSN 5310-00-951-4679 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-951-4679 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-951-4679. Primary manufacturer part number: 5702-201-20.
Features
  • Washer,flat — FSC 5310
  • Material Document and Classification: FED STD 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
  • Material: STEEL OVERALL
  • Surface Treatment: CADMIUM OVERALL
  • Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Nondefinitive Spec/std Data: A TYPE AND 1 GRADE AND A CLASS
  • Hole Diameter: 0.120 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
  • Cross-Sectional Shape Style: RECTANGULAR
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-951-4679, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Seastrom Manufacturing Co Inc. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 21 commercial cross-references from 15 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-951-4679
Primary Part Number5702-201-20
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerSeastrom Manufacturing Co Inc
StatusCANCELLED
Material Document and ClassificationFED STD 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
MaterialSTEEL OVERALL
Surface TreatmentCADMIUM OVERALL
Surface Treatment Document and ClassificationQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Nondefinitive Spec/std DataA TYPE AND 1 GRADE AND A CLASS
Hole Diameter0.120 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
Cross-Sectional Shape StyleRECTANGULAR
Peripheral Shape StyleROUND
Thickness0.017 INCHES MINIMUM AND 0.028 INCHES MAXIMUM IN
Overall Diameter0.245 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
Center Hole Shape StyleROUND
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 1
6630-01-464-0074810-50016 INTERCHANGEABLE
Bailer,well
Geotech Environmental Equipment Inc
Cross-Reference Index
Part NumberManufacturer
5702-201-20 Seastrom Manufacturing Co Inc (USA)
210-0994-00 Spacelabs-Hillsboro Operations Squibb Vitatek Inc (USA)
2159900171 Navcom Defense Electronics, Inc. (USA)
MS15795-3P Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
1602P3L Hamilton Sundstrand Corporation (USA)
MS15795-203 National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
MS15795-203 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
4197515-009 Raytheon Company Div Rmd Strategic (USA)
5310PL0820570 Jednolity Indeks Materialowy - Uniform Material Index (POL)
M104-154L Mancraft Industries Inc (USA)
4197515-9 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
981537 Safran Transmission Systems (FRA)
5310PL1370129 Jednolity Indeks Materialowy - Uniform Material Index (POL)
5310-951-4679 E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales
418171-3 Raytheon Company Dba Raytheon (USA)
5310009514679 E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales
4197515-9 Raytheon Company Div Rmd Strategic (USA)
3874-0003 Bae Systems Information & Electronic Systems Integration Inc. (USA)
MS27183-3 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MS27183-3 Raytheon Company (USA)
Related Parts
6630-01-464-0074INTERCHANGEABLE
BAILER,WELL
810-50016

Frequently Asked Questions

What is NSN 5310-00-951-4679?

NSN 5310-00-951-4679 is a Washer,flat, manufactured by Seastrom Manufacturing Co Inc, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-951-4679?

NSN 5310-00-951-4679 has 21 cross-referenced part numbers: 5702-201-20 (Seastrom Manufacturing Co Inc), 210-0994-00 (Spacelabs-Hillsboro Operations Squibb Vitatek Inc), 2159900171 (Navcom Defense Electronics, Inc.), MS15795-3P (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), 1602P3L (Hamilton Sundstrand Corporation) and 16 more.

What NSN replaces 5310-00-951-4679?

There is 1 known substitute for 5310-00-951-4679: 6630-01-464-0074. Verify interchangeability with system specifications before substitution.

What are the specifications of 5702-201-20?

Key specifications for 5702-201-20: Material Document and Classification: FED STD 66 FED STD SINGLE MATERIAL RESPONSE OVERALL; Material: STEEL OVERALL; Surface Treatment: CADMIUM OVERALL; Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 12 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-951-4679 still in active supply?

NSN 5310-00-951-4679 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