PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

5953040Washer,lock

Tadiran Ltd · NSN 5310-00-551-7770 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-551-7770 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-551-7770. Primary manufacturer part number: 5953040.
Features
  • Washer,lock — FSC 5310
  • Hole Diameter: 0.115 INCHES MINIMUM AND 0.124 INCHES MAXIMUM IN
  • Style Designator: SPLIT HELICAL-RIGHT HAND
  • Nondefinitive Spec/std Data: 1 STYLE AND A CLASS
  • Material Document and Classification: 66 FED STD ALL MATERIAL RESPONSES OVERALL
  • Outside Diameter: 0.202 INCHES MAXIMUM IN
  • Material: STEEL COMP 1060 OR STEEL COMP 1065 OR STEEL COMP 1070 OR STEEL COMP 1075 OR STEEL COMP 1080 OVERALL
  • Hardness Rating: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 1060 or Steel Comp 1065 or Steel Comp 1070 or Steel Comp 1075 or Steel Comp 1080 Overall construction
General Description

The Washer,lock, cataloged under National Stock Number 5310-00-551-7770, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Tadiran Ltd. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 13 commercial cross-references from 13 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-551-7770
Primary Part Number5953040
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerTadiran Ltd
StatusCANCELLED
Hole Diameter0.115 INCHES MINIMUM AND 0.124 INCHES MAXIMUM IN
Style DesignatorSPLIT HELICAL-RIGHT HAND
Nondefinitive Spec/std Data1 STYLE AND A CLASS
Material Document and Classification66 FED STD ALL MATERIAL RESPONSES OVERALL
Outside Diameter0.202 INCHES MAXIMUM IN
MaterialSTEEL COMP 1060 OR STEEL COMP 1065 OR STEEL COMP 1070 OR STEEL COMP 1075 OR STEEL COMP 1080 OVERALL
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
Material Thickness0.020 INCHES MINIMUM AND 0.026 INCHES MAXIMUM IN
Surface TreatmentCADMIUM OVERALL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
5310-00-543-2410MS35338-40 INTERCHANGEABLE
Washer,lock
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5305-01-191-20811037-662 INTERCHANGEABLE
Screw,cap,socket Head
Woodward, Inc. Div Fuel Systems and Controls
Cross-Reference Index
Part NumberManufacturer
5953040 Tadiran Ltd (ISR)
AS142CC4 Mission Systems Orchard Park Inc (USA)
3090-4L Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S (USA)
901043K1 Bendix Corp the (USA)
901043K1 Honeywell International Inc Div Aerospace-South Bend (bendix Dr) (USA)
10-37662 Teledyne Industries Inc Teledyne Power Systems Div (USA)
10-37662 Unison Industries Llc (USA)
K3098-7-8-4 Bodine Electric Company (USA)
4198008-018 Raytheon Company Dba Raytheon (USA)
515905-2 Smiths Detection Inc. Dba Smiths Detection Inc Casc (USA)
10-37662 Amphenol Corp Div Amphenol Aerospace Operations (USA)
AN935-4L Aeronautical Standards Group Dept of Navy and Air Force (USA)
MS35337-40 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5310-00-543-2410INTERCHANGEABLE
WASHER,LOCK
MS35338-40
5305-01-191-2081INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
1037-662

Frequently Asked Questions

What is NSN 5310-00-551-7770?

NSN 5310-00-551-7770 is a Washer,lock, manufactured by Tadiran Ltd, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-551-7770?

NSN 5310-00-551-7770 has 13 cross-referenced part numbers: 5953040 (Tadiran Ltd), AS142CC4 (Mission Systems Orchard Park Inc), 3090-4L (Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S), 901043K1 (Bendix Corp the), 901043K1 (Honeywell International Inc Div Aerospace-South Bend (bendix Dr)) and 8 more.

What NSN replaces 5310-00-551-7770?

There are 2 known substitutes for 5310-00-551-7770: 5310-00-543-2410, 5305-01-191-2081. Verify interchangeability with system specifications before substitution.

What are the specifications of 5953040?

Key specifications for 5953040: Hole Diameter: 0.115 INCHES MINIMUM AND 0.124 INCHES MAXIMUM IN; Style Designator: SPLIT HELICAL-RIGHT HAND; Nondefinitive Spec/std Data: 1 STYLE AND A CLASS; Material Document and Classification: 66 FED STD ALL MATERIAL RESPONSES OVERALL. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-551-7770 still in active supply?

NSN 5310-00-551-7770 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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