PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

16-3557Washer,lock

Eaton Electrical Inc. Dba Cuttler Hmmer Cmrcl Cntrls Div Div Vehicle Controls Business Unit · NSN 5310-01-175-5716 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-175-5716 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-175-5716. Primary manufacturer part number: 16-3557.
Features
  • Washer,lock — FSC 5310
  • Material: COPPER ALLOY OVERALL
  • Surface Treatment: TIN OVERALL
  • Style Designator: FLAT INTERNAL TEETH
  • Hole Diameter: 0.469 INCHES NOMINAL IN
  • 2 verified cross-references
  • Primary manufacturer: Eaton Electrical Inc. Dba Cuttler Hmmer Cmrcl Cntrls Div Div Vehicle Controls Business Unit
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 5310-01-175-5716, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Eaton Electrical Inc. Dba Cuttler Hmmer Cmrcl Cntrls Div Div Vehicle Controls Business Unit. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 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
NSN5310-01-175-5716
Primary Part Number16-3557
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerEaton Electrical Inc. Dba Cuttler Hmmer Cmrcl Cntrls Div Div Vehicle Controls Business Unit
StatusACTIVE
MaterialCOPPER ALLOY OVERALL
Surface TreatmentTIN OVERALL
Style DesignatorFLAT INTERNAL TEETH
Hole Diameter0.469 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5950-01-148-1207 INTERCHANGEABLE
Transformer,power
6532-01-538-90854854 INTERCHANGEABLE
Footwear Covers,operating Room
Cardinal Health 200, Llc
5961-01-658-2102163 557 INTERCHANGEABLE
Semiconductor Device,diode
Miller Electric Mfg. Llc
Cross-Reference Index
Part NumberManufacturer
16-3557 PRIMARY Eaton Electrical Inc. Dba Cuttler Hmmer Cmrcl Cntrls Div Div Vehicle Controls Business Unit (USA)
8991-1378AS Cooper Industries Inc Cooper Distribution Equipment Div (USA)
Related Parts
5950-01-148-1207INTERCHANGEABLE
TRANSFORMER,POWER
6532-01-538-9085INTERCHANGEABLE
FOOTWEAR COVERS,OPERATING ROOM
4854
5961-01-658-2102INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
163 557

Frequently Asked Questions

What is NSN 5310-01-175-5716?

NSN 5310-01-175-5716 is a Washer,lock, manufactured by Eaton Electrical Inc. Dba Cuttler Hmmer Cmrcl Cntrls Div Div Vehicle Controls Business Unit, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-175-5716?

NSN 5310-01-175-5716 has 2 cross-referenced part numbers: 16-3557 (Eaton Electrical Inc. Dba Cuttler Hmmer Cmrcl Cntrls Div Div Vehicle Controls Business Unit), 8991-1378AS (Cooper Industries Inc Cooper Distribution Equipment Div).

What NSN replaces 5310-01-175-5716?

There are 3 known substitutes for 5310-01-175-5716: 5950-01-148-1207, 6532-01-538-9085, 5961-01-658-2102. Verify interchangeability with system specifications before substitution.

What are the specifications of 16-3557?

Key specifications for 16-3557: Material: COPPER ALLOY OVERALL; Surface Treatment: TIN OVERALL; Style Designator: FLAT INTERNAL TEETH; Hole Diameter: 0.469 INCHES NOMINAL IN. 4 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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