PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

91100011NWasher,lock

Fairbanks Morse, Llc · NSN 5310-01-178-1940 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-178-1940 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-178-1940. Primary manufacturer part number: 91100011N.
Features
  • Washer,lock — FSC 5310
  • Style Designator: SPLIT HELICAL-RIGHT HAND
  • Hardness Rating: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
  • Material Thickness: 0.094 INCHES MINIMUM IN
  • Outside Diameter: 0.683 INCHES MAXIMUM IN
  • Material: STEEL OVERALL
  • Hole Diameter: 0.382 INCHES MINIMUM IN
  • 8 verified cross-references
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Washer,lock, cataloged under National Stock Number 5310-01-178-1940, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Fairbanks Morse, Llc. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 3 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
NSN5310-01-178-1940
Primary Part Number91100011N
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerFairbanks Morse, Llc
StatusACTIVE
Style DesignatorSPLIT HELICAL-RIGHT HAND
Hardness Rating45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
Material Thickness0.094 INCHES MINIMUM IN
Outside Diameter0.683 INCHES MAXIMUM IN
MaterialSTEEL OVERALL
Hole Diameter0.382 INCHES MINIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5950-00-296-131050MM241 INTERCHANGEABLE
Reactor
Keysight Technologies Inc
5305-00-551-6702159708 INTERCHANGEABLE
Screw,cap,hexagon Head
Hyster-Yale Group, Inc. Div Hyster-Yale Materials Handling
Cross-Reference Index
Part NumberManufacturer
91100011N PRIMARY Fairbanks Morse, Llc (USA)
91100011N Coltec Industries Inc. Dba Fairbanks Morse Engine Div Fairbanks Morse Engine (USA)
91100011N Chand, L.l.c. (USA)
81309760N PRIMARY Fairbanks Morse, Llc (USA)
91100011 Fairbanks Morse, Llc (USA)
81309760N Coltec Industries Inc. Dba Fairbanks Morse Engine Div Fairbanks Morse Engine (USA)
81309760N Chand, L.l.c. (USA)
91100011 Coltec Industries Inc. Dba Fairbanks Morse Engine Div Fairbanks Morse Engine (USA)
Related Parts
5950-00-296-1310INTERCHANGEABLE
REACTOR
50MM241
5305-00-551-6702INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
159708

Frequently Asked Questions

What is NSN 5310-01-178-1940?

NSN 5310-01-178-1940 is a Washer,lock, manufactured by Fairbanks Morse, Llc, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-178-1940?

NSN 5310-01-178-1940 has 8 cross-referenced part numbers: 91100011N (Fairbanks Morse, Llc), 91100011N (Coltec Industries Inc. Dba Fairbanks Morse Engine Div Fairbanks Morse Engine), 91100011N (Chand, L.l.c.), 81309760N (Fairbanks Morse, Llc), 91100011 (Fairbanks Morse, Llc) and 3 more.

What NSN replaces 5310-01-178-1940?

There are 2 known substitutes for 5310-01-178-1940: 5950-00-296-1310, 5305-00-551-6702. Verify interchangeability with system specifications before substitution.

What are the specifications of 91100011N?

Key specifications for 91100011N: Style Designator: SPLIT HELICAL-RIGHT HAND; Hardness Rating: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM; Material Thickness: 0.094 INCHES MINIMUM IN; Outside Diameter: 0.683 INCHES MAXIMUM IN. 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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