PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

12622Washer,concave

Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems · NSN 5310-00-787-6466 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-787-6466 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-787-6466. Primary manufacturer part number: 12622.
Features
  • Washer,concave — FSC 5310
  • Material: IRON OVERALL
  • Style Designator: CONCAVE
  • Material Document and Classification: AS-3 FSCM 84760 MFR REF SINGLE MATERIAL RESPONSE OVERALL
  • Material Thickness: 0.090 INCHES NOMINAL IN
  • Recess Diameter: 0.410 INCHES NOMINAL IN
  • Hole Diameter: 0.250 INCHES NOMINAL IN
  • Outside Diameter: 0.575 INCHES MINIMUM AND 0.580 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Iron Overall construction
General Description

The Washer,concave, cataloged under National Stock Number 5310-00-787-6466, 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 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-787-6466
Primary Part Number12622
Item NameWasher,concave
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerStanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
StatusACTIVE
MaterialIRON OVERALL
Style DesignatorCONCAVE
Material Document and ClassificationAS-3 FSCM 84760 MFR REF SINGLE MATERIAL RESPONSE OVERALL
Material Thickness0.090 INCHES NOMINAL IN
Recess Diameter0.410 INCHES NOMINAL IN
Hole Diameter0.250 INCHES NOMINAL IN
Outside Diameter0.575 INCHES MINIMUM AND 0.580 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6625-00-001-4452 INTERCHANGEABLE
Test Set,audio
5950-00-053-4307G146-373-001 INTERCHANGEABLE
Transformer,audio Frequency
Bae Systems Information and Electronic Systems Integration Inc.
5310-00-059-873333115121 INTERCHANGEABLE
Washer,flat
Westerbeke Corporation
4130-00-061-870369-93 INTERCHANGEABLE
Filter Element,air Conditioning
Curtiss-Wright Controls Integrated Sensing, Inc.
4310-00-062-43516992 INTERCHANGEABLE
Ring,piston
Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor
5995-00-087-23256993 INTERCHANGEABLE
Cable Assembly,power,electrical
Spencer Industries Inc
4820-00-227-0168045 1-4 INTERCHANGEABLE
Valve,globe
Fairbanks Co the
5133-00-228-1356 INTERCHANGEABLE
Drill,twist
5360-00-250-01866993 INTERCHANGEABLE
Spring,helical,compression
Telemechanics Inc
3040-00-349-66944771P INTERCHANGEABLE
Plate,retaining,shaft
Curtiss-Wright Electro-Mechanical Corporation Div Epd
Cross-Reference Index
Part NumberManufacturer
1007-1 Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems (USA)
6993 Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc (USA)
368035R1 Navistar International Corporation Dba Navistar (USA)
12622 PRIMARY Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems (USA)
368035R1 International Harvester Co Agricultural Equipment Div (USA)
Related Parts
6625-00-001-4452INTERCHANGEABLE
TEST SET,AUDIO
5950-00-053-4307INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
G146-373-001
5310-00-059-8733INTERCHANGEABLE
WASHER,FLAT
33115121
4130-00-061-8703INTERCHANGEABLE
FILTER ELEMENT,AIR CONDITIONING
69-93
4310-00-062-4351INTERCHANGEABLE
RING,PISTON
6992
5995-00-087-2325INTERCHANGEABLE
CABLE ASSEMBLY,POWER,ELECTRICAL
6993
4820-00-227-0168INTERCHANGEABLE
VALVE,GLOBE
045 1-4
5133-00-228-1356INTERCHANGEABLE
DRILL,TWIST
5360-00-250-0186INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
6993
3040-00-349-6694INTERCHANGEABLE
PLATE,RETAINING,SHAFT
4771P
5930-00-407-1796INTERCHANGEABLE
SWITCH,ROTARY
6993
9540-00-596-2999INTERCHANGEABLE
ANGLE,STRUCTURAL

Frequently Asked Questions

What is NSN 5310-00-787-6466?

NSN 5310-00-787-6466 is a Washer,concave, manufactured by Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-787-6466?

NSN 5310-00-787-6466 has 5 cross-referenced part numbers: 1007-1 (Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems), 6993 (Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc), 368035R1 (Navistar International Corporation Dba Navistar), 12622 (Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems), 368035R1 (International Harvester Co Agricultural Equipment Div).

What NSN replaces 5310-00-787-6466?

There are 12 known substitutes for 5310-00-787-6466: 6625-00-001-4452, 5950-00-053-4307, 5310-00-059-8733 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 12622?

Key specifications for 12622: Material: IRON OVERALL; Style Designator: CONCAVE; Material Document and Classification: AS-3 FSCM 84760 MFR REF SINGLE MATERIAL RESPONSE OVERALL; Material Thickness: 0.090 INCHES NOMINAL IN. 7 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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