PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A950Washer,lock

Modine Manufacturing Co · NSN 5310-00-010-3320 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-010-3320 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-010-3320. Primary manufacturer part number: A950.
Features
  • Washer,lock — FSC 5310
  • Material Thickness: 0.078 INCHES MINIMUM AND 0.088 INCHES MAXIMUM IN
  • Nondefinitive Spec/std Data: 2 STYLE AND A CLASS
  • Material: STEEL CORROSION RESISTING OVERALL
  • Style Designator: SPLIT HELICAL-RIGHT HAND
  • Hole Diameter: 0.318 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN
  • Outside Diameter: 0.586 INCHES MAXIMUM IN
  • 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 Corrosion Resisting Overall construction
General Description

The Washer,lock, cataloged under National Stock Number 5310-00-010-3320, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Modine Manufacturing Co. Government technical data includes 7 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
NSN5310-00-010-3320
Primary Part NumberA950
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerModine Manufacturing Co
StatusCANCELLED
Material Thickness0.078 INCHES MINIMUM AND 0.088 INCHES MAXIMUM IN
Nondefinitive Spec/std Data2 STYLE AND A CLASS
MaterialSTEEL CORROSION RESISTING OVERALL
Style DesignatorSPLIT HELICAL-RIGHT HAND
Hole Diameter0.318 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN
Outside Diameter0.586 INCHES MAXIMUM IN
Hardness Rating45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
4820-00-063-3296615A INTERCHANGEABLE
Valve,angle
William Powell Company, the Dba Powell Valve Div the Starflo Corporation
2810-00-118-944440049 INTERCHANGEABLE
Cover,exhaust Valve,rocker Box
Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
5120-00-124-3744 INTERCHANGEABLE
Die,crimping Tool
2520-00-149-75086F0857 INTERCHANGEABLE
Housing
Caterpillar Inc Div Caterpillar Defense
3110-00-155-9016112BIC00 INTERCHANGEABLE
Bearing,ball,annular
Timken Co Div the Timken Company
5999-00-173-4445S630 INTERCHANGEABLE
Contact,electrical
Dynalec Corporation
5310-00-199-5296 INTERCHANGEABLE
Nut,plain,slotted,hexagon
4720-00-212-6948430565 INTERCHANGEABLE
Hose Assembly,nonmetallic
Clark Material Handling Company
6230-00-299-5566 INTERCHANGEABLE
Floodlight,electric
4920-00-334-4787S605A INTERCHANGEABLE
Test Stand,hydraulic System Comp
Curtiss-Wright Flow Control Corporation Dba Farris Engineering Div Curtiss-Wright Valves Division- Farris
Cross-Reference Index
Part NumberManufacturer
A950 Modine Manufacturing Co (USA)
5310PL0951123 Jednolity Indeks Materialowy - Uniform Material Index (POL)
805057 American Hoist and Derrick Co
103320 Fruehauf Corp (USA)
X2977 Liberty Ventures Inti, Llc (USA)
X528 Queen City Mfg Co (USA)
X3-500 Kaitlin Corp (USA)
X528 Meritor Industrial Products, Llc (USA)
X528L Strick Trailer Co (USA)
X528 Meritor Heavy Vehicle Systems, Llc (USA)
3B-4505 Navantia - Propulsion Y Energia Motores - Cartagena (ESP)
C536 Acco Industries Inc Sub of Babcock Intl Inc (USA)
3B4505 Caterpillar Inc Div Caterpillar Defense (USA)
615A Brinkley Technology Group Llc Dba Hercules Manufacturing (USA)
5-75-19 Dana Corp Spicer Transmission Div (USA)
12X1014SC Prestolite Electric Inc (USA)
805057 Terex American Crane Corp (USA)
12X1014SC Prestolite Electric Inc (USA)
40049 Napco International Llc Dba Napco International Inc (USA)
103320 General Motors Corp Electro-Motive Div (USA)
Related Parts
4820-00-063-3296INTERCHANGEABLE
VALVE,ANGLE
615A
2810-00-118-9444INTERCHANGEABLE
COVER,EXHAUST VALVE,ROCKER BOX
40049
5120-00-124-3744INTERCHANGEABLE
DIE,CRIMPING TOOL
2520-00-149-7508INTERCHANGEABLE
HOUSING
6F0857
3110-00-155-9016INTERCHANGEABLE
BEARING,BALL,ANNULAR
112BIC00
5999-00-173-4445INTERCHANGEABLE
CONTACT,ELECTRICAL
S630
5310-00-199-5296INTERCHANGEABLE
NUT,PLAIN,SLOTTED,HEXAGON
4720-00-212-6948INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
430565
6230-00-299-5566INTERCHANGEABLE
FLOODLIGHT,ELECTRIC
4920-00-334-4787INTERCHANGEABLE
TEST STAND,HYDRAULIC SYSTEM COMP
S605A
5310-00-349-8267INTERCHANGEABLE
WASHER,LOCK
5310-00-358-8344INTERCHANGEABLE
WASHER,KEY
41S104

Frequently Asked Questions

What is NSN 5310-00-010-3320?

NSN 5310-00-010-3320 is a Washer,lock, manufactured by Modine Manufacturing Co, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-010-3320?

NSN 5310-00-010-3320 has 50 cross-referenced part numbers: A950 (Modine Manufacturing Co), 5310PL0951123 (Jednolity Indeks Materialowy - Uniform Material Index), 805057 (American Hoist and Derrick Co), 103320 (Fruehauf Corp), X2977 (Liberty Ventures Inti, Llc) and 45 more.

What NSN replaces 5310-00-010-3320?

There are 12 known substitutes for 5310-00-010-3320: 4820-00-063-3296, 2810-00-118-9444, 5120-00-124-3744 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of A950?

Key specifications for A950: Material Thickness: 0.078 INCHES MINIMUM AND 0.088 INCHES MAXIMUM IN; Nondefinitive Spec/std Data: 2 STYLE AND A CLASS; Material: STEEL CORROSION RESISTING OVERALL; Style Designator: SPLIT HELICAL-RIGHT HAND. 7 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-010-3320 still in active supply?

NSN 5310-00-010-3320 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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