PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1JA8657H10Washer,lock

Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp · NSN 5310-00-261-7410 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-261-7410 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-261-7410. Primary manufacturer part number: 1JA8657H10.
Features
  • Washer,lock — FSC 5310
  • Hardness Rating: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
  • Surface Treatment: CADMIUM AND CHROMATE OVERALL
  • Nondefinitive Spec/std Data: A CLASS AND 2 STYLE
  • Surface Treatment Document and Classification: QQ-P-416,TYPE 2,CLASS 3 FED SPEC ALL TREATMENT RESPONSES OVERALL
  • Material Document and Classification: 66,UNS G10600 THRU UNS G10800 FED STD ALL MATERIAL RESPONSES OVERALL
  • Material: STEEL COMP 1060 OR STEEL COMP 1080 OVERALL
  • Style Designator: SPLIT HELICAL-RIGHT HAND
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 1060 or Steel Comp 1080 Overall construction
General Description

The Washer,lock, cataloged under National Stock Number 5310-00-261-7410, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 8 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-261-7410
Primary Part Number1JA8657H10
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerNorthrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
StatusACTIVE
Hardness Rating45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
Surface TreatmentCADMIUM AND CHROMATE OVERALL
Nondefinitive Spec/std DataA CLASS AND 2 STYLE
Surface Treatment Document and ClassificationQQ-P-416,TYPE 2,CLASS 3 FED SPEC ALL TREATMENT RESPONSES OVERALL
Material Document and Classification66,UNS G10600 THRU UNS G10800 FED STD ALL MATERIAL RESPONSES OVERALL
MaterialSTEEL COMP 1060 OR STEEL COMP 1080 OVERALL
Style DesignatorSPLIT HELICAL-RIGHT HAND
Outside Diameter0.296 INCHES MAXIMUM IN
Material Thickness0.040 INCHES MINIMUM AND 0.046 INCHES MAXIMUM IN
Specification/standard Data81348-FF-W-84 GOVERNMENT SPECIFICATION AND 96906-MS35337/CANCELED/ GOVERNMENT STANDARD
Departure From Cited DocumentFF-W-84,PARAGRAPH 3.3.1 CADMIUM PLATING
ColorYELLOW OVERALL
Hole Diameter0.168 INCHES MINIMUM AND 0.178 INCHES MAXIMUM IN
Supplementary FeaturesDEEP YELLOW COLOR FED STD 595 COLOR NO. 23538; SUBSTITUTIVE NSN 5310-00-045-3299
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
3040-01-201-6770 INTERCHANGEABLE
Gearshaft,spur
4920-01-231-7951K410A15017 INTERCHANGEABLE
Adapter Set,test
Avtron Aerospace Inc
Cross-Reference Index
Part NumberManufacturer
935C8 Numax Electronics Inc (USA)
FF-W-84 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
1JA8657H10 PRIMARY Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA)
A15017 PRIMARY Frontgrade Technologies Inc. (USA)
MS35337-42 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
AN935-8 Aeronautical Standards Group Dept of Navy and Air Force (USA)
A15017 Litton Systems Inc Airtron Div (USA)
5310PL0846624 Jednolity Indeks Materialowy - Uniform Material Index (POL)
Related Parts
3040-01-201-6770INTERCHANGEABLE
GEARSHAFT,SPUR
4920-01-231-7951INTERCHANGEABLE
ADAPTER SET,TEST
K410A15017

Frequently Asked Questions

What is NSN 5310-00-261-7410?

NSN 5310-00-261-7410 is a Washer,lock, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-261-7410?

NSN 5310-00-261-7410 has 8 cross-referenced part numbers: 935C8 (Numax Electronics Inc), FF-W-84 (Federal Specifications Promulgated by General Services Administration Washington DC), 1JA8657H10 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp), A15017 (Frontgrade Technologies Inc.), MS35337-42 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M) and 3 more.

What NSN replaces 5310-00-261-7410?

There are 2 known substitutes for 5310-00-261-7410: 3040-01-201-6770, 4920-01-231-7951. Verify interchangeability with system specifications before substitution.

What are the specifications of 1JA8657H10?

Key specifications for 1JA8657H10: Hardness Rating: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM; Surface Treatment: CADMIUM AND CHROMATE OVERALL; Nondefinitive Spec/std Data: A CLASS AND 2 STYLE; Surface Treatment Document and Classification: QQ-P-416,TYPE 2,CLASS 3 FED SPEC ALL TREATMENT RESPONSES OVERALL. 14 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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