PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

120-390Washer,flat

Komatsu American Intl Co · NSN 5310-00-445-3554 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-445-3554 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-445-3554. Primary manufacturer part number: 120-390.
Features
  • Washer,flat — FSC 5310
  • Thickness: 0.120 INCHES NOMINAL IN
  • Cross-Sectional Shape Style: RECTANGULAR
  • Peripheral Shape Style: ROUND
  • Center Hole Shape Style: ROUND
  • Overall Diameter: 1.371 INCHES NOMINAL IN
  • Material: STEEL OVERALL
  • Hole Diameter: 0.570 INCHES NOMINAL IN
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 5310-00-445-3554, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Komatsu American Intl Co. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-445-3554
Primary Part Number120-390
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerKomatsu American Intl Co
StatusACTIVE
Thickness0.120 INCHES NOMINAL IN
Cross-Sectional Shape StyleRECTANGULAR
Peripheral Shape StyleROUND
Center Hole Shape StyleROUND
Overall Diameter1.371 INCHES NOMINAL IN
MaterialSTEEL OVERALL
Hole Diameter0.570 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5310-00-012-0390120390 INTERCHANGEABLE
Washer,flat
Chrysler Realty Company Llc Dba Daimler Chrysler
5340-00-022-0693NAS816-75 INTERCHANGEABLE
Cap-Plug,protective,dust and Moi
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5930-00-460-5749 INTERCHANGEABLE
Switch,push
3120-00-661-907621-449 INTERCHANGEABLE
Bearing,sleeve
Dresser Industries Inc Leroi Div
5930-01-313-0484120390 INTERCHANGEABLE
Switch,flow
Setra Systems, Inc. Dba Gems Sensors
5310-01-587-445695571A847 INTERCHANGEABLE
Washer,flat
Mcmaster-Carr Supply Co
Cross-Reference Index
Part NumberManufacturer
120-390 Komatsu American Intl Co (USA)
WF18 Komatsu American Intl Co (USA)
120-390 Komatsu America Corp. (USA)
Related Parts
5310-00-012-0390INTERCHANGEABLE
WASHER,FLAT
120390
5340-00-022-0693INTERCHANGEABLE
CAP-PLUG,PROTECTIVE,DUST AND MOI
NAS816-75
5930-00-460-5749INTERCHANGEABLE
SWITCH,PUSH
3120-00-661-9076INTERCHANGEABLE
BEARING,SLEEVE
21-449
5930-01-313-0484INTERCHANGEABLE
SWITCH,FLOW
120390
5310-01-587-4456INTERCHANGEABLE
WASHER,FLAT
95571A847

Frequently Asked Questions

What is NSN 5310-00-445-3554?

NSN 5310-00-445-3554 is a Washer,flat, manufactured by Komatsu American Intl Co, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-445-3554?

NSN 5310-00-445-3554 has 3 cross-referenced part numbers: 120-390 (Komatsu American Intl Co), WF18 (Komatsu American Intl Co), 120-390 (Komatsu America Corp.).

What NSN replaces 5310-00-445-3554?

There are 6 known substitutes for 5310-00-445-3554: 5310-00-012-0390, 5340-00-022-0693, 5930-00-460-5749 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 120-390?

Key specifications for 120-390: Thickness: 0.120 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND; Center Hole Shape Style: ROUND. 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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