PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

L2370Washer,key

Caterpillar Inc Div Caterpillar Defense · NSN 5310-00-431-2157 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-431-2157 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-431-2157. Primary manufacturer part number: L2370.
Features
  • Washer,key — FSC 5310
  • Style Designator: KEY
  • Material: STEEL OVERALL
  • Internal Prebent Key Width: 0.344 INCHES NOMINAL IN
  • Outside Diameter: 2.625 INCHES NOMINAL IN
  • Distance From Centerline to Inside of Prebent Key: 1.062 INCHES NOMINAL IN
  • Material Thickness: 0.062 INCHES NOMINAL IN
  • Internal Prebent Key Length: 0.156 INCHES NOMINAL IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Washer,key, cataloged under National Stock Number 5310-00-431-2157, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-431-2157
Primary Part NumberL2370
Item NameWasher,key
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerCaterpillar Inc Div Caterpillar Defense
StatusACTIVE
Style DesignatorKEY
MaterialSTEEL OVERALL
Internal Prebent Key Width0.344 INCHES NOMINAL IN
Outside Diameter2.625 INCHES NOMINAL IN
Distance From Centerline to Inside of Prebent Key1.062 INCHES NOMINAL IN
Material Thickness0.062 INCHES NOMINAL IN
Internal Prebent Key Length0.156 INCHES NOMINAL IN
Hole Diameter1.375 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
1680-00-118-3257PM-21761 INTERCHANGEABLE
Cover,grip Control
Mason Electric Co. Dba Mason Controls
1075-00-331-708721761-4 INTERCHANGEABLE
Controller,manual,a
Ward Leonard Ct Llc
5120-01-491-891221761 INTERCHANGEABLE
Socket,socket Wrench
Amron International Inc
6515-01-573-753221761 INTERCHANGEABLE
Otoscope
Welch Allyn, Inc.
1630-01-647-76652-1761 INTERCHANGEABLE
Brake,multiple Disk
Goodrich Corporation Div Collins Aerospace, Landing Systems (wheels & Brakes)
Cross-Reference Index
Part NumberManufacturer
0121761-1 New Holland Construction (USA)
0121761 New Holland Construction (USA)
L2370 PRIMARY Caterpillar Inc Div Caterpillar Defense (USA)
21761 New Holland Construction (USA)
Related Parts
1680-00-118-3257INTERCHANGEABLE
COVER,GRIP CONTROL
PM-21761
1075-00-331-7087INTERCHANGEABLE
CONTROLLER,MANUAL,A
21761-4
5120-01-491-8912INTERCHANGEABLE
SOCKET,SOCKET WRENCH
21761
6515-01-573-7532INTERCHANGEABLE
OTOSCOPE
21761
1630-01-647-7665INTERCHANGEABLE
BRAKE,MULTIPLE DISK
2-1761

Frequently Asked Questions

What is NSN 5310-00-431-2157?

NSN 5310-00-431-2157 is a Washer,key, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-431-2157?

NSN 5310-00-431-2157 has 4 cross-referenced part numbers: 0121761-1 (New Holland Construction), 0121761 (New Holland Construction), L2370 (Caterpillar Inc Div Caterpillar Defense), 21761 (New Holland Construction).

What NSN replaces 5310-00-431-2157?

There are 5 known substitutes for 5310-00-431-2157: 1680-00-118-3257, 1075-00-331-7087, 5120-01-491-8912 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of L2370?

Key specifications for L2370: Style Designator: KEY; Material: STEEL OVERALL; Internal Prebent Key Width: 0.344 INCHES NOMINAL IN; Outside Diameter: 2.625 INCHES NOMINAL IN. 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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