PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3238999Washer,flat

Hatch & Kirk, Inc. · NSN 5310-00-238-1035 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-238-1035 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-238-1035. Primary manufacturer part number: 3238999.
Features
  • Washer,flat — FSC 5310
  • Hole Diameter: 0.750 INCHES NOMINAL IN
  • Cross-Sectional Shape Style: RECTANGULAR
  • Peripheral Shape Style: ROUND
  • Center Hole Shape Style: ROUND
  • Overall Diameter: 1.125 INCHES NOMINAL IN
  • Material: WOOL COMP 16R2 OVERALL
  • Material Document and Classification: C-F-206,TYPE 1,CL 16R2 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Wool Comp 16r2 Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-238-1035, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Hatch & Kirk, Inc.. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 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: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-238-1035
Primary Part Number3238999
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerHatch & Kirk, Inc.
StatusCANCELLED
Hole Diameter0.750 INCHES NOMINAL IN
Cross-Sectional Shape StyleRECTANGULAR
Peripheral Shape StyleROUND
Center Hole Shape StyleROUND
Overall Diameter1.125 INCHES NOMINAL IN
MaterialWOOL COMP 16R2 OVERALL
Material Document and ClassificationC-F-206,TYPE 1,CL 16R2 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Thickness0.125 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
3120-00-009-9172CB3238-24 INTERCHANGEABLE
Bearing,sleeve
Beemer Precision Inc
4730-00-050-4207AS15001-4 INTERCHANGEABLE
Fitting,lubrication
Sae International Dba Sae International
4820-00-287-6010373-3IN INTERCHANGEABLE
Valve,check
Crane Co Div Valve Div
3120-00-857-50491790 INTERCHANGEABLE
Bearing,sleeve
Parker-Hannifin Corporation Dba Control Systems Division
6930-01-042-1489GA811BT1 INTERCHANGEABLE
Amplifier,operation
Northrop Grumman Systems Corporation
4320-01-060-99571790 INTERCHANGEABLE
Parts Kit,reciprocating Pump
Templeton Kenly and Co Inc
5998-01-070-4140 INTERCHANGEABLE
Circuit Card Assembly
4910-01-237-59641790 INTERCHANGEABLE
Tire Scriber
Bee Line Co Div Bee Line Company
6750-01-382-0572 INTERCHANGEABLE
Paper,photographic
6515-01-392-6761HRCI1790 INTERCHANGEABLE
Nebulizer Kit,inhalation Therapy
Medical Specialties Inc
Cross-Reference Index
Part NumberManufacturer
3238999 General Motors Corp Electro-Motive Div (USA)
6F9252 Caterpillar Inc Div Caterpillar Defense (USA)
3238999 PRIMARY Hatch & Kirk, Inc. (USA)
1790 Prestolite Electric Inc (USA)
Related Parts
3120-00-009-9172INTERCHANGEABLE
BEARING,SLEEVE
CB3238-24
4730-00-050-4207INTERCHANGEABLE
FITTING,LUBRICATION
AS15001-4
4820-00-287-6010INTERCHANGEABLE
VALVE,CHECK
373-3IN
3120-00-857-5049INTERCHANGEABLE
BEARING,SLEEVE
1790
6930-01-042-1489INTERCHANGEABLE
AMPLIFIER,OPERATION
GA811BT1
4320-01-060-9957INTERCHANGEABLE
PARTS KIT,RECIPROCATING PUMP
1790
5998-01-070-4140INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
4910-01-237-5964INTERCHANGEABLE
TIRE SCRIBER
1790
6750-01-382-0572INTERCHANGEABLE
PAPER,PHOTOGRAPHIC
6515-01-392-6761INTERCHANGEABLE
NEBULIZER KIT,INHALATION THERAPY
HRCI1790
5365-01-399-8009INTERCHANGEABLE
PLUG,MACHINE THREAD
1790
4930-01-582-0125INTERCHANGEABLE
REEL ASSEMBLY,STATIC DISCHARGE

Frequently Asked Questions

What is NSN 5310-00-238-1035?

NSN 5310-00-238-1035 is a Washer,flat, manufactured by Hatch & Kirk, Inc., classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-238-1035?

NSN 5310-00-238-1035 has 4 cross-referenced part numbers: 3238999 (General Motors Corp Electro-Motive Div), 6F9252 (Caterpillar Inc Div Caterpillar Defense), 3238999 (Hatch & Kirk, Inc.), 1790 (Prestolite Electric Inc).

What NSN replaces 5310-00-238-1035?

There are 12 known substitutes for 5310-00-238-1035: 3120-00-009-9172, 4730-00-050-4207, 4820-00-287-6010 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 3238999?

Key specifications for 3238999: Hole Diameter: 0.750 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND; Center Hole Shape Style: ROUND. 8 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-238-1035 still in active supply?

NSN 5310-00-238-1035 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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