PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21816Nut,self-Locking,hexagon

General Equipment Co · NSN 5310-00-275-1419 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-275-1419 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-275-1419. Primary manufacturer part number: 21816.
Features
  • Nut,self-Locking,hexagon — FSC 5310
  • Thread Series: UNF
  • Temp Rating: 550.0 FAHRENHEIT NOMINAL DEGF
  • Locking Feature: PREVAILING TORQUE ALL METAL DESIGN
  • Nominal Thread Size: 0.750 INCHES IN
  • Nut Height: 0.875 INCHES NOMINAL IN
  • Thread Quantity Per Inch: 16
  • Surface Treatment: CADMIUM AND ZINC OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-00-275-1419, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is General Equipment Co. Government technical data includes 11 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. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-275-1419
Primary Part Number21816
Item NameNut,self-Locking,hexagon
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerGeneral Equipment Co
StatusACTIVE
Thread SeriesUNF
Temp Rating550.0 FAHRENHEIT NOMINAL DEGF
Locking FeaturePREVAILING TORQUE ALL METAL DESIGN
Nominal Thread Size0.750 INCHES IN
Nut Height0.875 INCHES NOMINAL IN
Thread Quantity Per Inch16
Surface TreatmentCADMIUM AND ZINC OVERALL
Thread Class3B
Width Across Flats1.062 INCHES NOMINAL IN
MaterialSTEEL OVERALL
Thread DirectionRIGHT-HAND
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5330-00-430-199140999-2614 INTERCHANGEABLE
Packing Assembly
Garlock Sealing Technologies Llc Dba Garlock Sealing Technologies Llc
6625-00-492-9002 INTERCHANGEABLE
Slotted Line,coaxial
5340-00-623-542221816 INTERCHANGEABLE
Bracket,main
Mason Electric Co. Dba Mason Controls
5961-01-020-457221816 INTERCHANGEABLE
Transistor
Smiths Aerospace, Inc., Electronic Systems-Grand Rapids
6670-01-545-9808218-16 INTERCHANGEABLE
Weight Set,balance
Ohaus Corporation
4730-01-567-3785 INTERCHANGEABLE
Adapter and Flange Assembly
6630-01-592-25861023237 INTERCHANGEABLE
Lens,hematology Analyzer
Beckman Coulter Inc Div Us Customer Operations
Cross-Reference Index
Part NumberManufacturer
21816 General Equipment Co (USA)
AN363-1216 Aeronautical Standards Group Dept of Navy and Air Force (USA)
Related Parts
5330-00-430-1991INTERCHANGEABLE
PACKING ASSEMBLY
40999-2614
6625-00-492-9002INTERCHANGEABLE
SLOTTED LINE,COAXIAL
5340-00-623-5422INTERCHANGEABLE
BRACKET,MAIN
21816
5961-01-020-4572INTERCHANGEABLE
TRANSISTOR
21816
6670-01-545-9808INTERCHANGEABLE
WEIGHT SET,BALANCE
218-16
4730-01-567-3785INTERCHANGEABLE
ADAPTER AND FLANGE ASSEMBLY
6630-01-592-2586INTERCHANGEABLE
LENS,HEMATOLOGY ANALYZER
1023237

Frequently Asked Questions

What is NSN 5310-00-275-1419?

NSN 5310-00-275-1419 is a Nut,self-Locking,hexagon, manufactured by General Equipment Co, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-275-1419?

NSN 5310-00-275-1419 has 2 cross-referenced part numbers: 21816 (General Equipment Co), AN363-1216 (Aeronautical Standards Group Dept of Navy and Air Force).

What NSN replaces 5310-00-275-1419?

There are 7 known substitutes for 5310-00-275-1419: 5330-00-430-1991, 6625-00-492-9002, 5340-00-623-5422 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21816?

Key specifications for 21816: Thread Series: UNF; Temp Rating: 550.0 FAHRENHEIT NOMINAL DEGF; Locking Feature: PREVAILING TORQUE ALL METAL DESIGN; Nominal Thread Size: 0.750 INCHES IN. 11 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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