PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

27326R1Washer,flat

Komatsu America Corp. · NSN 5310-01-244-8937 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-244-8937 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-244-8937. Primary manufacturer part number: 27326R1.
Features
  • Washer,flat — FSC 5310
  • Surface Treatment: PHOSPHATE OVERALL
  • Cross-Sectional Shape Style: RECTANGULAR
  • Material: STEEL OVERALL
  • Peripheral Shape Style: ROUND
  • Center Hole Shape Style: ROUND
  • 5 verified cross-references
  • Primary manufacturer: Komatsu America Corp.
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 5310-01-244-8937, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Komatsu America Corp.. Government technical data includes 5 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
NSN5310-01-244-8937
Primary Part Number27326R1
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerKomatsu America Corp.
StatusACTIVE
Surface TreatmentPHOSPHATE OVERALL
Cross-Sectional Shape StyleRECTANGULAR
MaterialSTEEL OVERALL
Peripheral Shape StyleROUND
Center Hole Shape StyleROUND
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5310-00-738-753610945257 INTERCHANGEABLE
Washer,flat
U S Army Tank Automotive Command Amsta-Im-Mm
5310-01-065-259633115 INTERCHANGEABLE
Washer,flat
Fastenal Company Dba Fastenal Co
5310-01-189-83850400467 INTERCHANGEABLE
Washer,flat
Miller Industries Towing Equipment Inc
5310-01-274-563227616R1 INTERCHANGEABLE
Washer,flat
Nd Defense Llc
5310-01-283-7623 INTERCHANGEABLE
Washer,flat
5310-01-361-838612759-00196 INTERCHANGEABLE
Washer,flat
Fastenal Company Dba Fastenal Co
5310-01-363-174025976R1 INTERCHANGEABLE
Washer,flat
Nd Defense Llc
5310-01-556-5376 INTERCHANGEABLE
Washer,flat
5310-01-556-537740255 INTERCHANGEABLE
Washer,lock
Fastenal Company Dba Fastenal Co
5310-01-556-538611101377 INTERCHANGEABLE
Washer,flat
Fastenal Company Dba Fastenal Co
Cross-Reference Index
Part NumberManufacturer
27326R1 Navistar Intl Corp Truck Br Ohio Plant (USA)
27326R1 Nd Defense Llc (USA)
27326R1 Komatsu American Intl Co (USA)
ESP-F-16.104-PP Nd Defense Llc (USA)
27326R1 PRIMARY Komatsu America Corp. (USA)
Related Parts
5310-00-738-7536INTERCHANGEABLE
WASHER,FLAT
10945257
5310-01-065-2596INTERCHANGEABLE
WASHER,FLAT
33115
5310-01-189-8385INTERCHANGEABLE
WASHER,FLAT
0400467
5310-01-274-5632INTERCHANGEABLE
WASHER,FLAT
27616R1
5310-01-283-7623INTERCHANGEABLE
WASHER,FLAT
5310-01-361-8386INTERCHANGEABLE
WASHER,FLAT
12759-00196
5310-01-363-1740INTERCHANGEABLE
WASHER,FLAT
25976R1
5310-01-556-5376INTERCHANGEABLE
WASHER,FLAT
5310-01-556-5377INTERCHANGEABLE
WASHER,LOCK
40255
5310-01-556-5386INTERCHANGEABLE
WASHER,FLAT
11101377
5310-01-579-3833INTERCHANGEABLE
WASHER,FLAT
5310-01-582-3377INTERCHANGEABLE
WASHER,FLAT
25645R1

Frequently Asked Questions

What is NSN 5310-01-244-8937?

NSN 5310-01-244-8937 is a Washer,flat, manufactured by Komatsu America Corp., classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-244-8937?

NSN 5310-01-244-8937 has 5 cross-referenced part numbers: 27326R1 (Navistar Intl Corp Truck Br Ohio Plant), 27326R1 (Nd Defense Llc), 27326R1 (Komatsu American Intl Co), ESP-F-16.104-PP (Nd Defense Llc), 27326R1 (Komatsu America Corp.).

What NSN replaces 5310-01-244-8937?

There are 12 known substitutes for 5310-01-244-8937: 5310-00-738-7536, 5310-01-065-2596, 5310-01-189-8385 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 27326R1?

Key specifications for 27326R1: Special Features: 5/16" HARDENED WASHER, .344 NOM ID, .688 NOM OD, .089 NOM THICKNESS. STEEL 1040 TO 1065 PER CEMS A-0, PART 1, QUENCHED AND TEMPERED TO RE36 TO 42. THESE WASHERS ARE INTENDED FOR USE IN HIGH CLAMPING LOADS, TO MINIMIZE EMBEDDING, AND TO AID TORQUING.; Surface Treatment: PHOSPHATE OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Part Name Assigned by Controlling Agency: WASHER,LOCK .344X.688X.089 PHC. 8 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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