PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

W22-4CAWasher,lock

United Technologies Corp Electro Systems Inc · NSN 5310-00-559-0070 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-559-0070 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-559-0070. Primary manufacturer part number: W22-4CA.
Features
  • Washer,lock — FSC 5310
  • Hardness Rating: 40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
  • Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Surface Treatment: CADMIUM OVERALL
  • Hole Diameter: 0.168 INCHES MINIMUM AND 0.176 INCHES MAXIMUM IN
  • Material Thickness: 0.018 INCHES MINIMUM AND 0.023 INCHES MAXIMUM IN
  • Outside Diameter: 0.325 INCHES MINIMUM AND 0.340 INCHES MAXIMUM IN
  • Material: STEEL COMP 1050 OR STEEL COMP 1551 OR STEEL COMP 1059 OR STEEL COMP 1060 OR STEEL COMP 1561 OR STEEL COMP 1064 OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 1050 or Steel Comp 1551 or Steel Comp 1059 or Steel Comp 1060 or Steel Comp 1561 or Steel Comp 1064 Overall construction
General Description

The Washer,lock, cataloged under National Stock Number 5310-00-559-0070, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is United Technologies Corp Electro Systems Inc. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 50 commercial cross-references from 46 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
NSN5310-00-559-0070
Primary Part NumberW22-4CA
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerUnited Technologies Corp Electro Systems Inc
StatusCANCELLED
Hardness Rating40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
Surface Treatment Document and ClassificationQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Surface TreatmentCADMIUM OVERALL
Hole Diameter0.168 INCHES MINIMUM AND 0.176 INCHES MAXIMUM IN
Material Thickness0.018 INCHES MINIMUM AND 0.023 INCHES MAXIMUM IN
Outside Diameter0.325 INCHES MINIMUM AND 0.340 INCHES MAXIMUM IN
MaterialSTEEL COMP 1050 OR STEEL COMP 1551 OR STEEL COMP 1059 OR STEEL COMP 1060 OR STEEL COMP 1561 OR STEEL COMP 1064 OVERALL
Material Document and Classification66 FED STD ALL MATERIAL RESPONSES OVERALL
Style DesignatorFLAT INTERNAL TEETH
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5310-00-013-8166 INTERCHANGEABLE
Washer,lock
3040-00-015-8804115544 INTERCHANGEABLE
Parts Kit,linear Actuating Cylin
Parker Hannifin Corporation Div Hydraulic Systems Division
3110-00-100-032112601853 INTERCHANGEABLE
Cup,tapered Roller Bearing
U S Army Tank Automotive Command Amsta-Im-Mm
5310-00-209-2960 INTERCHANGEABLE
Washer,lock
5331-00-238-952279404 INTERCHANGEABLE
O-Ring
Hamilton Sundstrand Corporation Dba Collins Aerospace
4210-00-334-0518 INTERCHANGEABLE
Rack,fire Hose
2330-00-407-7904V13GT INTERCHANGEABLE
Trailer,bolster
Joint Electronics Type Designation System
5970-00-541-652620154-2 INTERCHANGEABLE
Insulator,bushing
Fisica Applied Technologies, Inc. Div Randtron Antenna Systems
5310-00-543-2740MS35333-74 INTERCHANGEABLE
Washer,lock
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
2330-00-834-21678342167 INTERCHANGEABLE
Trailer,bolster
U S Army Tank Automotive Command Amsta-Im-Mm
Cross-Reference Index
Part NumberManufacturer
115544 General Motors Corp (USA)
138530 Terex Equipment Ltd Div Construction Equipment (GBR)
MS35333-38 Wesco Aircraft Hardware Corp. Dba Incora (USA)
10121184 Nimikkeistokeskus Ncb Finland (FIN)
W22-4CA Ambac International Corporation Div Ambac International (USA)
4198000-12 Raytheon Company Dba Raytheon (USA)
8LW6 Coltec Industries Inc. Dba Fairbanks Morse Engine Div Fairbanks Morse Engine (USA)
MS35333-4 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
WA22-4 United Technologies Corp Electro Systems Inc (USA)
48716H Navistar International Corporation Dba Navistar (USA)
70034-38 Little Giant Crane and Shovel Inc (USA)
9B-7233 Pon Equipment B.v. (NLD)
M271 Zf Industrieantriebe Witten Gmbh (DEU)
SK1579-11 Curtiss-Wright Controls Integrated Sensing, Inc. (USA)
W22-4CA PRIMARY United Technologies Corp Electro Systems Inc (USA)
1305ZP Federal Screw Products, Inc. (USA)
91070 PRIMARY Briggs and Stratton Corp (USA)
JHP13-207 Hollingsworth John R Co (USA)
99021-71 Cummins Inc. (USA)
MS35333-55 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5310-00-013-8166INTERCHANGEABLE
WASHER,LOCK
3040-00-015-8804INTERCHANGEABLE
PARTS KIT,LINEAR ACTUATING CYLIN
115544
3110-00-100-0321INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
12601853
5310-00-209-2960INTERCHANGEABLE
WASHER,LOCK
5331-00-238-9522INTERCHANGEABLE
O-RING
79404
4210-00-334-0518INTERCHANGEABLE
RACK,FIRE HOSE
2330-00-407-7904INTERCHANGEABLE
TRAILER,BOLSTER
V13GT
5970-00-541-6526INTERCHANGEABLE
INSULATOR,BUSHING
20154-2
5310-00-543-2740INTERCHANGEABLE
WASHER,LOCK
MS35333-74
2330-00-834-2167INTERCHANGEABLE
TRAILER,BOLSTER
8342167
5930-00-845-0301INTERCHANGEABLE
SWITCH,THERMOSTATIC
4820-00-861-0567INTERCHANGEABLE
VALVE,CHECK
M271

Frequently Asked Questions

What is NSN 5310-00-559-0070?

NSN 5310-00-559-0070 is a Washer,lock, manufactured by United Technologies Corp Electro Systems Inc, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-559-0070?

NSN 5310-00-559-0070 has 50 cross-referenced part numbers: 115544 (General Motors Corp), 138530 (Terex Equipment Ltd Div Construction Equipment), MS35333-38 (Wesco Aircraft Hardware Corp. Dba Incora), 10121184 (Nimikkeistokeskus Ncb Finland), W22-4CA (Ambac International Corporation Div Ambac International) and 45 more.

What NSN replaces 5310-00-559-0070?

There are 12 known substitutes for 5310-00-559-0070: 5310-00-013-8166, 3040-00-015-8804, 3110-00-100-0321 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of W22-4CA?

Key specifications for W22-4CA: Hardness Rating: 40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM; End Item Identification: MULTIPLE LAUNCH ROCKET SYSTEM (MLRS); A4 BRADLEY FIGHTING VEHICLE; A3 BRADLEY FIGHTING VEHICLE; LOGISTICS SUPPORT VESSEL; ARMORED MULTI-PURPOSE VEHICLE (AMPV); Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Surface Treatment: CADMIUM OVERALL. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-559-0070 still in active supply?

NSN 5310-00-559-0070 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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