PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

G210722-4Washer,lock

American Telephone and Telegraph Co · NSN 5310-00-012-1574 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-012-1574 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-012-1574. Primary manufacturer part number: G210722-4.
Features
  • Washer,lock — FSC 5310
  • Material: STEEL OVERALL
  • Outside Diameter: 1.079 INCHES MAXIMUM IN
  • Hole Diameter: 0.636 INCHES MINIMUM AND 0.653 INCHES MAXIMUM IN
  • Style Designator: SPLIT HELICAL-RIGHT HAND
  • Hardness Rating: 45.0 ROCKWELL C MINIMUM AND 53.0 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
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Washer,lock, cataloged under National Stock Number 5310-00-012-1574, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is American Telephone and Telegraph Co. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 28 commercial cross-references from 19 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-012-1574
Primary Part NumberG210722-4
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerAmerican Telephone and Telegraph Co
StatusCANCELLED
MaterialSTEEL OVERALL
Outside Diameter1.079 INCHES MAXIMUM IN
Hole Diameter0.636 INCHES MINIMUM AND 0.653 INCHES MAXIMUM IN
Style DesignatorSPLIT HELICAL-RIGHT HAND
Hardness Rating45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
Surface Treatment Document and ClassificationQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Surface TreatmentCADMIUM OVERALL
Material Document and ClassificationFED STD 66,AISI C1060 THRU C1080 FED STD ALL MATERIAL RESPONSES OVERALL
Material Thickness0.156 INCHES MINIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 8
5310-00-021-85631018 INTERCHANGEABLE
Nut,plain,hexagon
Ambac International Corporation Div Ambac International
5310-00-281-2504121574 INTERCHANGEABLE
Nut,plain,round
Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
5330-00-672-4753 INTERCHANGEABLE
Gasket
5310-00-820-6653MS35338-50 INTERCHANGEABLE
Washer,lock
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5310-00-878-76392AT131 INTERCHANGEABLE
Washer,flat
Oshkosh Defense Llc
5310-01-331-5730 INTERCHANGEABLE
Washer,lock
4820-01-540-3000131574 INTERCHANGEABLE
Disk,valve
William Powell Company, the Dba Powell Valve Div the Starflo Corporation
4720-01-641-6567131574 INTERCHANGEABLE
Hose Assembly,nonmetallic
Gehl Co
Cross-Reference Index
Part NumberManufacturer
G210722-4 American Telephone and Telegraph Co (USA)
D9578-1-27 Met-Pro Corporation (USA)
121574 Us Army Aviation and Missile Command (USA)
328299PC9 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
328295PC23 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
121574 Checker Motors Corporation (USA)
FFW84CLASSASTYLE2 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
121574 Chrysler Realty Company Llc Dba Daimler Chrysler (USA)
121574 Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/ (USA)
121574 Diamond Reo Truck Co (USA)
34811S7 Ford Motor Co Ford Parts and Service Div Government Part Sales (USA)
12Z22PC256 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
424314PC17 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
121574 International Harvester Co Agricultural Equipment Div (USA)
179172PC7 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
378078PC3 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
MS35338-31 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
L6493-10 Pettibone Llc (USA)
121574 Rolls-Royce Solutions America Inc (USA)
131574 General Motors Corp (USA)
Related Parts
5310-00-021-8563INTERCHANGEABLE
NUT,PLAIN,HEXAGON
1018
5310-00-281-2504INTERCHANGEABLE
NUT,PLAIN,ROUND
121574
5330-00-672-4753INTERCHANGEABLE
GASKET
5310-00-820-6653INTERCHANGEABLE
WASHER,LOCK
MS35338-50
5310-00-878-7639INTERCHANGEABLE
WASHER,FLAT
2AT131
5310-01-331-5730INTERCHANGEABLE
WASHER,LOCK
4820-01-540-3000INTERCHANGEABLE
DISK,VALVE
131574
4720-01-641-6567INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
131574

Frequently Asked Questions

What is NSN 5310-00-012-1574?

NSN 5310-00-012-1574 is a Washer,lock, manufactured by American Telephone and Telegraph Co, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-012-1574?

NSN 5310-00-012-1574 has 28 cross-referenced part numbers: G210722-4 (American Telephone and Telegraph Co), D9578-1-27 (Met-Pro Corporation), 121574 (Us Army Aviation and Missile Command), 328299PC9 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 328295PC23 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier) and 23 more.

What NSN replaces 5310-00-012-1574?

There are 8 known substitutes for 5310-00-012-1574: 5310-00-021-8563, 5310-00-281-2504, 5330-00-672-4753 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of G210722-4?

Key specifications for G210722-4: Material: STEEL OVERALL; Outside Diameter: 1.079 INCHES MAXIMUM IN; Hole Diameter: 0.636 INCHES MINIMUM AND 0.653 INCHES MAXIMUM IN; Style Designator: SPLIT HELICAL-RIGHT HAND. 9 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-012-1574 still in active supply?

NSN 5310-00-012-1574 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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