PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

121101-1Washer,flat

L3harris Technologies, Inc. Div Space and Airborne Systems · NSN 5310-01-483-1449 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-483-1449 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-483-1449. Primary manufacturer part number: 121101-1.
Features
  • Washer,flat — FSC 5310
  • Material Document and Classification: QQ-S-763,TYPE 303 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Surface Finish: 125.0 MICROINCHES ALL SURFACES
  • Cross-Sectional Shape Style: RECTANGULAR
  • Overall Diameter: 1.250 INCHES NOMINAL IN
  • Peripheral Shape Style: ROUND
  • Thickness: 0.063 INCHES NOMINAL IN
  • Hole Diameter: 0.688 INCHES MINIMUM AND 0.689 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 303 Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-01-483-1449, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is L3harris Technologies, Inc. Div Space and Airborne Systems. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-483-1449
Primary Part Number121101-1
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerL3harris Technologies, Inc. Div Space and Airborne Systems
StatusACTIVE
Material Document and ClassificationQQ-S-763,TYPE 303 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Surface Finish125.0 MICROINCHES ALL SURFACES
Cross-Sectional Shape StyleRECTANGULAR
Overall Diameter1.250 INCHES NOMINAL IN
Peripheral Shape StyleROUND
Thickness0.063 INCHES NOMINAL IN
Hole Diameter0.688 INCHES MINIMUM AND 0.689 INCHES MAXIMUM IN
Center Hole Shape StyleROUND
MaterialSTEEL COMP 303 OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6740-00-062-0070 INTERCHANGEABLE
Reel Bracket Assemb
5950-00-488-7273401590 INTERCHANGEABLE
Transformer,power
Aimtron Systems, Llc
5306-00-940-90188350591 INTERCHANGEABLE
Bolt,machine
U S Army Tank Automotive Command Amsta-Im-Mm
6680-00-987-196312110-1 INTERCHANGEABLE
Regulator
Siemens Industry, Inc. Dba Siemens Energy Div Process Industries and Drives
1680-01-045-605212110-1 INTERCHANGEABLE
Processor,signal
General Nucleonics, Inc. Dba General Nucleonics Inc
3740-01-096-163214001068 INTERCHANGEABLE
Trap,insect
B & G Equipment Company
5945-01-148-8518 INTERCHANGEABLE
Relay,thermal
5999-01-271-7292121-10-1 INTERCHANGEABLE
Module Assembly
Technology Dynamics, Inc.
5310-01-357-6946121101 INTERCHANGEABLE
Washer,lock
Rotron Incorporated
4310-01-493-204012-1105 INTERCHANGEABLE
Valve,reed
Aerocontrolex Group, Inc.
Cross-Reference Index
Part NumberManufacturer
121101-1 PRIMARY L3harris Technologies, Inc. Div Space and Airborne Systems (USA)
121101 L3harris Technologies, Inc. Div Space and Airborne Systems (USA)
Related Parts
6740-00-062-0070INTERCHANGEABLE
REEL BRACKET ASSEMB
5950-00-488-7273INTERCHANGEABLE
TRANSFORMER,POWER
401590
5306-00-940-9018INTERCHANGEABLE
BOLT,MACHINE
8350591
6680-00-987-1963INTERCHANGEABLE
REGULATOR
12110-1
1680-01-045-6052INTERCHANGEABLE
PROCESSOR,SIGNAL
12110-1
3740-01-096-1632INTERCHANGEABLE
TRAP,INSECT
14001068
5945-01-148-8518INTERCHANGEABLE
RELAY,THERMAL
5999-01-271-7292INTERCHANGEABLE
MODULE ASSEMBLY
121-10-1
5310-01-357-6946INTERCHANGEABLE
WASHER,LOCK
121101
4310-01-493-2040INTERCHANGEABLE
VALVE,REED
12-1105
5845-01-602-8442INTERCHANGEABLE
ACOUSTICC DEVICE CO
121101
5305-01-695-5280INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
121101

Frequently Asked Questions

What is NSN 5310-01-483-1449?

NSN 5310-01-483-1449 is a Washer,flat, manufactured by L3harris Technologies, Inc. Div Space and Airborne Systems, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-483-1449?

NSN 5310-01-483-1449 has 2 cross-referenced part numbers: 121101-1 (L3harris Technologies, Inc. Div Space and Airborne Systems), 121101 (L3harris Technologies, Inc. Div Space and Airborne Systems).

What NSN replaces 5310-01-483-1449?

There are 12 known substitutes for 5310-01-483-1449: 6740-00-062-0070, 5950-00-488-7273, 5306-00-940-9018 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 121101-1?

Key specifications for 121101-1: Part Name Assigned by Controlling Agency: NAVY SPECIAL PROJECT; Material Document and Classification: QQ-S-763,TYPE 303 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Surface Finish: 125.0 MICROINCHES ALL SURFACES; Cross-Sectional Shape Style: RECTANGULAR. 10 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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