PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21146Washer,finishing

Raytheon Company Dba Raytheon · NSN 5310-00-596-1776 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-596-1776 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-596-1776. Primary manufacturer part number: 21146.
Features
  • Washer,finishing — FSC 5310
  • Material: COPPER ALLOY OVERALL
  • Material Thickness: 0.010 INCHES NOMINAL IN
  • Recess Angle: 45.0 DEGREES NOMINAL
  • Recess Diameter: 0.296 INCHES NOMINAL IN
  • Hole Diameter: 0.203 INCHES NOMINAL IN
  • Style Designator: FINISHING
  • Outside Diameter: 0.468 INCHES NOMINAL IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Copper Alloy Overall construction
General Description

The Washer,finishing, cataloged under National Stock Number 5310-00-596-1776, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Raytheon Company Dba Raytheon. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-596-1776
Primary Part Number21146
Item NameWasher,finishing
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerRaytheon Company Dba Raytheon
StatusACTIVE
MaterialCOPPER ALLOY OVERALL
Material Thickness0.010 INCHES NOMINAL IN
Recess Angle45.0 DEGREES NOMINAL
Recess Diameter0.296 INCHES NOMINAL IN
Hole Diameter0.203 INCHES NOMINAL IN
Style DesignatorFINISHING
Outside Diameter0.468 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
3110-00-439-25794994913 INTERCHANGEABLE
Bearing,ball,annular
Kalmar AC Inc
6145-00-538-8426 INTERCHANGEABLE
Cable,special Purpose,electrical
3120-00-585-4522 INTERCHANGEABLE
Bearing,sleeve
8030-00-664-7077 INTERCHANGEABLE
Filler,wood
4820-00-793-06472-1146 INTERCHANGEABLE
Control Assembly,vo
Jaidinger Manufacturing Co Inc Dba Jaidinger Manufacturing Co Inc
4730-00-995-3527102-0606C INTERCHANGEABLE
Adapter,straight,pipe to Hose
American Couplings Co
5330-01-215-967121146 INTERCHANGEABLE
Gasket
Parker Hannifin Corporation Div Hydraulic Systems Division
4730-01-249-22862114-6 INTERCHANGEABLE
Adapter,straight,tube to Boss
King Engineering Corporation Dba King-Gage Systems
5895-01-370-759121146 INTERCHANGEABLE
Synchronizer,electrical
Belfort Instrument Company
2815-01-470-391121146 INTERCHANGEABLE
Reed Strip,valve
Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
Cross-Reference Index
Part NumberManufacturer
21146 PRIMARY Raytheon Company Dba Raytheon (USA)
21146 Integrity Fasteners Oc, Inc. (USA)
556-1803 Lockheed Martin Corporation Div Lockheed Martin Information Systems & Global Solutions (USA)
556-1803 Lockheed Martin Corporation Div Space (USA)
Related Parts
3110-00-439-2579INTERCHANGEABLE
BEARING,BALL,ANNULAR
4994913
6145-00-538-8426INTERCHANGEABLE
CABLE,SPECIAL PURPOSE,ELECTRICAL
3120-00-585-4522INTERCHANGEABLE
BEARING,SLEEVE
8030-00-664-7077INTERCHANGEABLE
FILLER,WOOD
4820-00-793-0647INTERCHANGEABLE
CONTROL ASSEMBLY,VO
2-1146
4730-00-995-3527INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO HOSE
102-0606C
5330-01-215-9671INTERCHANGEABLE
GASKET
21146
4730-01-249-2286INTERCHANGEABLE
ADAPTER,STRAIGHT,TUBE TO BOSS
2114-6
5895-01-370-7591INTERCHANGEABLE
SYNCHRONIZER,ELECTRICAL
21146
2815-01-470-3911INTERCHANGEABLE
REED STRIP,VALVE
21146
4810-01-512-3673INTERCHANGEABLE
VALVE,LINEAR,DIRECTIONAL CONTROL
21146-001

Frequently Asked Questions

What is NSN 5310-00-596-1776?

NSN 5310-00-596-1776 is a Washer,finishing, manufactured by Raytheon Company Dba Raytheon, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-596-1776?

NSN 5310-00-596-1776 has 4 cross-referenced part numbers: 21146 (Raytheon Company Dba Raytheon), 21146 (Integrity Fasteners Oc, Inc.), 556-1803 (Lockheed Martin Corporation Div Lockheed Martin Information Systems & Global Solutions), 556-1803 (Lockheed Martin Corporation Div Space).

What NSN replaces 5310-00-596-1776?

There are 11 known substitutes for 5310-00-596-1776: 3110-00-439-2579, 6145-00-538-8426, 3120-00-585-4522 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21146?

Key specifications for 21146: Material: COPPER ALLOY OVERALL; Material Thickness: 0.010 INCHES NOMINAL IN; Recess Angle: 45.0 DEGREES NOMINAL; Recess Diameter: 0.296 INCHES NOMINAL IN. 8 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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