PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21FKF616Nut,self-Locking,hexagon

Sps Technologies, Llc Dba PB Fasteners · NSN 5310-00-483-8793 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-483-8793 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-483-8793. Primary manufacturer part number: 21FKF616.
Features
  • Nut,self-Locking,hexagon — FSC 5310
  • Thread Class: 2B
  • Surface Treatment: CADMIUM OVERALL
  • Locking Feature: PREVAILING TORQUE ALL METAL DESIGN
  • Nut Height: 0.282 INCHES MAXIMUM IN
  • Bearing Surface Type: CHAMFERED
  • Thread Series: UNIFIED NATIONAL COARSE (UNC)
  • Thread Quantity Per Inch: 16
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 5310-00-483-8793, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Sps Technologies, Llc Dba PB Fasteners. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-483-8793
Primary Part Number21FKF616
Item NameNut,self-Locking,hexagon
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerSps Technologies, Llc Dba PB Fasteners
StatusACTIVE
Thread Class2B
Surface TreatmentCADMIUM OVERALL
Locking FeaturePREVAILING TORQUE ALL METAL DESIGN
Nut Height0.282 INCHES MAXIMUM IN
Bearing Surface TypeCHAMFERED
Thread SeriesUNIFIED NATIONAL COARSE (UNC)
Thread Quantity Per Inch16
Nominal Thread Size0.375 INCHES IN
LubricationSOLUBLE LUBRICANT
Thread DirectionRIGHT-HAND
Width Across Flats0.553 INCHES MINIMUM AND 0.564 INCHES MAXIMUM IN
MaterialSTEEL OVERALL
Nut StyleHEXAGON
Surface Treatment Document and ClassificationQQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5310-00-071-278180109 INTERCHANGEABLE
Nut,arbor
Black and Decker Us Inc
5950-00-732-852980109 INTERCHANGEABLE
Transformer,power
Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems
2010-01-176-5798 INTERCHANGEABLE
Cover Assembly,gear
4330-01-426-187380109 INTERCHANGEABLE
Filter Element,fluid
Dynatron Systems Corporation
5133-01-644-583280109 INTERCHANGEABLE
Drill,twist
Stanley Tools Div of Stanley Works
Cross-Reference Index
Part NumberManufacturer
80109 Federal Screw Products, Inc. (USA)
21FKF616 PRIMARY Sps Technologies, Llc Dba PB Fasteners (USA)
80109ADX Airdale Express Llc Div Airdale Express (USA)
Related Parts
5310-00-071-2781INTERCHANGEABLE
NUT,ARBOR
80109
5950-00-732-8529INTERCHANGEABLE
TRANSFORMER,POWER
80109
2010-01-176-5798INTERCHANGEABLE
COVER ASSEMBLY,GEAR
4330-01-426-1873INTERCHANGEABLE
FILTER ELEMENT,FLUID
80109
5133-01-644-5832INTERCHANGEABLE
DRILL,TWIST
80109

Frequently Asked Questions

What is NSN 5310-00-483-8793?

NSN 5310-00-483-8793 is a Nut,self-Locking,hexagon, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-483-8793?

NSN 5310-00-483-8793 has 3 cross-referenced part numbers: 80109 (Federal Screw Products, Inc.), 21FKF616 (Sps Technologies, Llc Dba PB Fasteners), 80109ADX (Airdale Express Llc Div Airdale Express).

What NSN replaces 5310-00-483-8793?

There are 5 known substitutes for 5310-00-483-8793: 5310-00-071-2781, 5950-00-732-8529, 2010-01-176-5798 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21FKF616?

Key specifications for 21FKF616: Thread Class: 2B; Surface Treatment: CADMIUM OVERALL; Locking Feature: PREVAILING TORQUE ALL METAL DESIGN; Nut Height: 0.282 INCHES MAXIMUM IN. 14 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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