PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

12337Washer,flat

Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems · NSN 5310-00-786-3999 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-786-3999 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-786-3999. Primary manufacturer part number: 12337.
Features
  • Washer,flat — FSC 5310
  • Hole Diameter: 0.198 INCHES MINIMUM AND 0.208 INCHES MAXIMUM IN
  • Overall Diameter: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
  • Center Hole Shape Style: ROUND
  • Material: STEEL OVERALL
  • Material Document and Classification: QQ-S-698 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Surface Treatment Document and Classification: QQ-P-416 TY 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Surface Treatment: CADMIUM AND CHROMATE OVERALL
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 5310-00-786-3999, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-786-3999
Primary Part Number12337
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerStanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
StatusCANCELLED
Hole Diameter0.198 INCHES MINIMUM AND 0.208 INCHES MAXIMUM IN
Overall Diameter0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
Center Hole Shape StyleROUND
MaterialSTEEL OVERALL
Material Document and ClassificationQQ-S-698 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Surface Treatment Document and ClassificationQQ-P-416 TY 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Surface TreatmentCADMIUM AND CHROMATE OVERALL
Peripheral Shape StyleROUND
Thickness0.036 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN
Cross-Sectional Shape StyleRECTANGULAR
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5930-00-104-854112928-525-2 INTERCHANGEABLE
Switch,push
Ward Leonard Ct Llc
3110-00-198-0550 INTERCHANGEABLE
Bearing,ball,annular
6210-00-241-0860 INTERCHANGEABLE
Light,indicator
5925-00-283-6511PDA-25 INTERCHANGEABLE
Circuit Breaker
Sensata Technologies, Inc. Div Sensata Attleboro
6240-00-295-161732-301 INTERCHANGEABLE
Lamp,incandescent
Parker-Hannifin Corporation Dba Pneutronics Div Chomerics Division
5305-00-392-2306123-37 INTERCHANGEABLE
Screw,shoulder
Lucent Technologies Inc Corporate Headquarters
6150-00-669-9254M7105 INTERCHANGEABLE
Cable Assembly,special Purpose,e
General Electric Co Wiring Device Dept
2910-00-966-913413214E8200 INTERCHANGEABLE
Parts Kit,carburetor
Cecom Lr Center
2530-01-130-336612313117 INTERCHANGEABLE
Pad,track,shoe
U S Army Tank Automotive Command Amsta-Im-Mm
5310-01-132-5013SP23C INTERCHANGEABLE
Washer
Bae Systems Information & Electronic Systems Integration
Cross-Reference Index
Part NumberManufacturer
210-1227-00 Tektronix, Inc. (USA)
5702-234-48 Seastrom Manufacturing Co Inc (USA)
13459 Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems (USA)
SP23C British Aerospace North America Inc (USA)
1824 Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems (USA)
8527516 Us Army Aviation and Missile Command (USA)
12337 PRIMARY Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems (USA)
9F9831 Caterpillar Inc Div Caterpillar Defense (USA)
5702-234-48-C2 Seastrom Manufacturing Co Inc (USA)
Related Parts
5930-00-104-8541INTERCHANGEABLE
SWITCH,PUSH
12928-525-2
3110-00-198-0550INTERCHANGEABLE
BEARING,BALL,ANNULAR
6210-00-241-0860INTERCHANGEABLE
LIGHT,INDICATOR
5925-00-283-6511INTERCHANGEABLE
CIRCUIT BREAKER
PDA-25
6240-00-295-1617INTERCHANGEABLE
LAMP,INCANDESCENT
32-301
5305-00-392-2306INTERCHANGEABLE
SCREW,SHOULDER
123-37
6150-00-669-9254INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
M7105
2910-00-966-9134INTERCHANGEABLE
PARTS KIT,CARBURETOR
13214E8200
2530-01-130-3366INTERCHANGEABLE
PAD,TRACK,SHOE
12313117
5310-01-132-5013INTERCHANGEABLE
WASHER
SP23C
5325-01-164-8292INTERCHANGEABLE
INSERT,SCREW THREAD
803-1385828 PC3
5930-01-172-5960INTERCHANGEABLE
SWITCH,PRESSURE
5188221

Frequently Asked Questions

What is NSN 5310-00-786-3999?

NSN 5310-00-786-3999 is a Washer,flat, manufactured by Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-786-3999?

NSN 5310-00-786-3999 has 9 cross-referenced part numbers: 210-1227-00 (Tektronix, Inc.), 5702-234-48 (Seastrom Manufacturing Co Inc), 13459 (Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems), SP23C (British Aerospace North America Inc), 1824 (Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems) and 4 more.

What NSN replaces 5310-00-786-3999?

There are 12 known substitutes for 5310-00-786-3999: 5930-00-104-8541, 3110-00-198-0550, 6210-00-241-0860 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 12337?

Key specifications for 12337: Hole Diameter: 0.198 INCHES MINIMUM AND 0.208 INCHES MAXIMUM IN; Overall Diameter: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN; Center Hole Shape Style: ROUND; Material: STEEL OVERALL. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-786-3999 still in active supply?

NSN 5310-00-786-3999 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.
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