PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

HLS-1/4Washer,lock

Heico Fasteners Inc Dba Heico Fasteners Inc Div Heico Fasteners N.a. · NSN 5310-01-606-3495 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-606-3495 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-606-3495. Primary manufacturer part number: HLS-1/4.
Features
  • Washer,lock — FSC 5310
  • Outside Diameter: 0.441 INCHES MINIMUM AND 0.465 INCHES MAXIMUM IN
  • Style Designator: TWO PIECE INTERLOCKING
  • Hole Diameter: 0.275 INCHES MINIMUM AND 0.291 INCHES MAXIMUM IN
  • 4 verified cross-references
  • Primary manufacturer: Heico Fasteners Inc Dba Heico Fasteners Inc Div Heico Fasteners N.a.
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Washer,lock, cataloged under National Stock Number 5310-01-606-3495, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Heico Fasteners Inc Dba Heico Fasteners Inc Div Heico Fasteners N.a.. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-606-3495
Primary Part NumberHLS-1/4
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerHeico Fasteners Inc Dba Heico Fasteners Inc Div Heico Fasteners N.a.
StatusACTIVE
Outside Diameter0.441 INCHES MINIMUM AND 0.465 INCHES MAXIMUM IN
Style DesignatorTWO PIECE INTERLOCKING
Hole Diameter0.275 INCHES MINIMUM AND 0.291 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5310-01-507-1280NL 1/4 INTERCHANGEABLE
Washer,lock
Fabory Usa Ltd.
5310-01-570-6417 INTERCHANGEABLE
Washer,lock
5310-01-686-4974 INTERCHANGEABLE
Washer,lock
Cross-Reference Index
Part NumberManufacturer
HLS-1/4 PRIMARY Heico Fasteners Inc Dba Heico Fasteners Inc Div Heico Fasteners N.a. (USA)
11582611 Us Army Benet Laboratories Rdar-Wsb-O (USA)
11582611-250 PRIMARY Us Army Benet Laboratories Rdar-Wsb-O (USA)
NL1/4 Nord Lock Inc (USA)
Related Parts
5310-01-507-1280INTERCHANGEABLE
WASHER,LOCK
NL 1/4
5310-01-570-6417INTERCHANGEABLE
WASHER,LOCK
5310-01-686-4974INTERCHANGEABLE
WASHER,LOCK

Frequently Asked Questions

What is NSN 5310-01-606-3495?

NSN 5310-01-606-3495 is a Washer,lock, manufactured by Heico Fasteners Inc Dba Heico Fasteners Inc Div Heico Fasteners N.a., classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-606-3495?

NSN 5310-01-606-3495 has 4 cross-referenced part numbers: HLS-1/4 (Heico Fasteners Inc Dba Heico Fasteners Inc Div Heico Fasteners N.a.), 11582611 (Us Army Benet Laboratories Rdar-Wsb-O), 11582611-250 (Us Army Benet Laboratories Rdar-Wsb-O), NL1/4 (Nord Lock Inc).

What NSN replaces 5310-01-606-3495?

There are 3 known substitutes for 5310-01-606-3495: 5310-01-507-1280, 5310-01-570-6417, 5310-01-686-4974. Verify interchangeability with system specifications before substitution.

What are the specifications of HLS-1/4?

Key specifications for HLS-1/4: Outside Diameter: 0.441 INCHES MINIMUM AND 0.465 INCHES MAXIMUM IN; Overall Height: 0.057 INCHES MINIMUM AND 0.081 INCHES MAXIMUM IN; Style Designator: TWO PIECE INTERLOCKING; Part Name Assigned by Controlling Agency: WASHER, LOCKING. 6 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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