PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

X7-3Washer,lock

Horizon Aerospace Llc Dba Magnetics Division · NSN 5310-00-032-1973 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-032-1973 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-032-1973. Primary manufacturer part number: X7-3.
Features
  • Washer,lock — FSC 5310
  • Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Material: COPPER ALLOY OVERALL
  • Hole Diameter: 0.101 INCHES MINIMUM AND 0.111 INCHES MAXIMUM IN
  • Style Designator: SPLIT HELICAL-RIGHT HAND
  • Surface Treatment: CADMIUM OVERALL
  • Material Thickness: 0.026 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
  • Outside Diameter: 0.163 INCHES MINIMUM AND 0.173 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Copper Alloy Overall construction
General Description

The Washer,lock, cataloged under National Stock Number 5310-00-032-1973, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Horizon Aerospace Llc Dba Magnetics Division. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-032-1973
Primary Part NumberX7-3
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerHorizon Aerospace Llc Dba Magnetics Division
StatusCANCELLED
Surface Treatment Document and ClassificationQQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
MaterialCOPPER ALLOY OVERALL
Hole Diameter0.101 INCHES MINIMUM AND 0.111 INCHES MAXIMUM IN
Style DesignatorSPLIT HELICAL-RIGHT HAND
Surface TreatmentCADMIUM OVERALL
Material Thickness0.026 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
Outside Diameter0.163 INCHES MINIMUM AND 0.173 INCHES MAXIMUM IN
Material Document and ClassificationAMS 4510 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 4
5970-00-456-09381408-59 INTERCHANGEABLE
Insulator,bushing
Lta/d-Cemco Inc Dba D-Cemco
2530-01-066-41669-X-4 INTERCHANGEABLE
Arm,center Steering
Pdi Ground Support Systems, Inc.
5360-01-437-3237KAL-01C PG 8.1 ITEM 8 INTERCHANGEABLE
Spring,helical,compression
Clausing Industrial Inc Dba Clausing Corp
5330-01-619-6731X73 INTERCHANGEABLE
Seal,plain Encased
Textron Aviation Inc
Cross-Reference Index
Part NumberManufacturer
X7-3 Horizon Aerospace Llc Dba Magnetics Division (USA)
140859 Lockheed Martin Corporation Div Rms - Mitchel Field (USA)
FF-W-84 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
Related Parts
5970-00-456-0938INTERCHANGEABLE
INSULATOR,BUSHING
1408-59
2530-01-066-4166INTERCHANGEABLE
ARM,CENTER STEERING
9-X-4
5360-01-437-3237INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
KAL-01C PG 8.1 ITEM 8
5330-01-619-6731INTERCHANGEABLE
SEAL,PLAIN ENCASED
X73

Frequently Asked Questions

What is NSN 5310-00-032-1973?

NSN 5310-00-032-1973 is a Washer,lock, manufactured by Horizon Aerospace Llc Dba Magnetics Division, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-032-1973?

NSN 5310-00-032-1973 has 3 cross-referenced part numbers: X7-3 (Horizon Aerospace Llc Dba Magnetics Division), 140859 (Lockheed Martin Corporation Div Rms - Mitchel Field), FF-W-84 (Federal Specifications Promulgated by General Services Administration Washington DC).

What NSN replaces 5310-00-032-1973?

There are 4 known substitutes for 5310-00-032-1973: 5970-00-456-0938, 2530-01-066-4166, 5360-01-437-3237 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of X7-3?

Key specifications for X7-3: Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Material: COPPER ALLOY OVERALL; Hole Diameter: 0.101 INCHES MINIMUM AND 0.111 INCHES MAXIMUM IN; Style Designator: SPLIT HELICAL-RIGHT HAND. 8 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-032-1973 still in active supply?

NSN 5310-00-032-1973 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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