PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21238Washer,lock

Industrial Technologies and Services Llc · NSN 5310-01-238-0650 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-238-0650 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-238-0650. Primary manufacturer part number: 21238.
Features
  • Washer,lock — FSC 5310
  • Material Thickness: 0.062 INCHES NOMINAL IN
  • Hole Diameter: 0.312 INCHES NOMINAL IN
  • Material Document and Classification: 66 FED STD ALL MATERIAL RESPONSES OVERALL
  • Material: STEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 302B OR STEEL COMP 303 OR STEEL COMP 303SE OR STEEL COMP 304 OR STEEL COMP 304L OR STEEL COMP 305 OR STEEL COMP 308 OR STEEL COMP 309 OR STEEL COMP 309S OR STEEL COMP 310 OR STEEL COMP 310S OR STEEL COMP 314 OR STEEL COMP 316 OR STEEL COMP 316L OR STEEL COMP 317 OR STEEL COMP 321 OR STEEL COMP 347 OR STEEL COMP 348 OR STEEL COMP 384 OR STEEL COMP 385 OVERALL
  • Style Designator: SPLIT HELICAL-RIGHT HAND
  • 1 verified cross-reference
  • Primary manufacturer: Industrial Technologies and Services Llc
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 301 or Steel Comp 302 or Steel Comp 302b or Steel Comp 303 or Steel Comp 303SE or Steel Comp 304 or Steel Comp 304l or Steel Comp 305 or Steel Comp 308 or Steel Comp 309 or Steel Comp 309s or Steel Comp 310 or Steel Comp 310s or Steel Comp 314 or Steel Comp 316 or Steel Comp 316l or Steel Comp 317 or Steel Comp 321 or Steel Comp 347 or Steel Comp 348 or Steel Comp 384 or Steel Comp 385 Overall construction
General Description

The Washer,lock, cataloged under National Stock Number 5310-01-238-0650, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Industrial Technologies and Services Llc. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, 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
NSN5310-01-238-0650
Primary Part Number21238
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerIndustrial Technologies and Services Llc
StatusACTIVE
Material Thickness0.062 INCHES NOMINAL IN
Hole Diameter0.312 INCHES NOMINAL IN
Material Document and Classification66 FED STD ALL MATERIAL RESPONSES OVERALL
MaterialSTEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 302B OR STEEL COMP 303 OR STEEL COMP 303SE OR STEEL COMP 304 OR STEEL COMP 304L OR STEEL COMP 305 OR STEEL COMP 308 OR STEEL COMP 309 OR STEEL COMP 309S OR STEEL COMP 310 OR STEEL COMP 310S OR STEEL COMP 314 OR STEEL COMP 316 OR STEEL COMP 316L OR STEEL COMP 317 OR STEEL COMP 321 OR STEEL COMP 347 OR STEEL COMP 348 OR STEEL COMP 384 OR STEEL COMP 385 OVERALL
Style DesignatorSPLIT HELICAL-RIGHT HAND
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5910-00-010-8720 INTERCHANGEABLE
Capacitor,fixed,ceramic Dielectr
5310-00-167-0816 INTERCHANGEABLE
Washer,flat
5110-00-260-1668 INTERCHANGEABLE
Reamer,hand
6685-01-077-569500187 INTERCHANGEABLE
Thermocouple
Simpson Electric Company, Inc.
6550-01-271-7646R21238 INTERCHANGEABLE
Ninhydrin Solution
Remel Inc.
5120-01-297-7101EX212-3/8 INTERCHANGEABLE
Bit,screwdriver
Amsco Products Camcar Div Textron Inc
Cross-Reference Index
Part NumberManufacturer
21238 PRIMARY Industrial Technologies and Services Llc (USA)
Related Parts
5910-00-010-8720INTERCHANGEABLE
CAPACITOR,FIXED,CERAMIC DIELECTR
5310-00-167-0816INTERCHANGEABLE
WASHER,FLAT
5110-00-260-1668INTERCHANGEABLE
REAMER,HAND
6685-01-077-5695INTERCHANGEABLE
THERMOCOUPLE
00187
6550-01-271-7646INTERCHANGEABLE
NINHYDRIN SOLUTION
R21238
5120-01-297-7101INTERCHANGEABLE
BIT,SCREWDRIVER
EX212-3/8

Frequently Asked Questions

What is NSN 5310-01-238-0650?

NSN 5310-01-238-0650 is a Washer,lock, manufactured by Industrial Technologies and Services Llc, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-238-0650?

NSN 5310-01-238-0650 has 1 cross-referenced part number: 21238 (Industrial Technologies and Services Llc).

What NSN replaces 5310-01-238-0650?

There are 6 known substitutes for 5310-01-238-0650: 5910-00-010-8720, 5310-00-167-0816, 5110-00-260-1668 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21238?

Key specifications for 21238: Material Thickness: 0.062 INCHES NOMINAL IN; Hole Diameter: 0.312 INCHES NOMINAL IN; End Item Identification: LOGISTICS SUPPORT VESSEL; Material Document and Classification: 66 FED STD ALL MATERIAL RESPONSES OVERALL. 6 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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