PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS21045-06Nut,self-Locking,hexagon

National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use · NSN 5310-00-889-2544 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-889-2544 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-889-2544. Primary manufacturer part number: MS21045-06.
Features
  • Nut,self-Locking,hexagon — FSC 5310
  • Thread Class: 3B
  • Thread Quantity Per Inch: 32
  • Locking Feature: PREVAILING TORQUE ALL METAL DESIGN
  • Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Bearing Surface Type: CHAMFERED OR WASHER FACED
  • Surface Treatment: CADMIUM OVERALL
  • Nominal Thread Size: 0.138 INCHES IN
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 5310-00-889-2544, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 26 commercial cross-references from 22 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-889-2544
Primary Part NumberMS21045-06
Item NameNut,self-Locking,hexagon
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerNational Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
StatusCANCELLED
Thread Class3B
Thread Quantity Per Inch32
Locking FeaturePREVAILING TORQUE ALL METAL DESIGN
Surface Treatment Document and ClassificationQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Bearing Surface TypeCHAMFERED OR WASHER FACED
Surface TreatmentCADMIUM OVERALL
Nominal Thread Size0.138 INCHES IN
Countersink Angle88.0 DEGREES NOMINAL NUT
Bearing Surface Finish125.0 MICROINCHES
MaterialSTEEL OVERALL
LubricationSOLUBLE LUBRICANT
Nut StyleHEXAGON
Width Across Flats0.305 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN
Nut Height0.160 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN
Thread SeriesUNJC
Thread DirectionRIGHT-HAND
Temp Rating450.0 FAHRENHEIT NOMINAL DEGF
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
5310-00-550-46171801-62 INTERCHANGEABLE
Nut,self-Locking,hexagon
Esna, Llc
4920-01-440-260681014-4 INTERCHANGEABLE
Case,electrical-Electronic Test
Parker-Hannifin Corporation Dba Pneutronics
Cross-Reference Index
Part NumberManufacturer
NAS1021A06 Lawrence Engineering and Supply Inc (USA)
27FH-632 Sps Technologies, Llc Dba PB Fasteners (USA)
NAS1021A06 Sps Technologies, Llc Dba PB Fasteners (USA)
NAS1021A06 Republic Fastener Mfg. Corp. Dba Arconic Fastening Systems (USA)
NAS1021A06 Qualified Air Components Inc. (USA)
H5506CW Howmet Global Fastening Systems Inc. Div Microdot Products (USA)
F180-62 Esna, Llc (USA)
NAS1021A06 Plastic and Metal Products Corporation (USA)
5310008892544 E.c.a Etablissement Centrald'approvisionnement Des Forces Armee
NAS1021A06 National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
NAS1021A06 Durham Aircraft Service Inc (USA)
NAS1021A06 Sps Technologies, Llc Dba Aerospace Fasteners Group Div Aerospace - Santa Ana (USA)
810144 Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Us Army Research, Development and Engineering Command Armament (USA)
NAS1021A06 Hardware Specialty Co. Inc. Dba Hardware Specialty Co Inc (USA)
MS21045-06 PRIMARY National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
MS21045-06 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
NAS1021A06 F and C Sales Inc (USA)
NAS1021A06 Collins Engineering Corp (USA)
6782886-62 Zf Industrieantriebe Witten Gmbh (DEU)
NAS1021A06 Nor-Cal Supply Co (USA)
Related Parts
5310-00-550-4617INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
1801-62
4920-01-440-2606INTERCHANGEABLE
CASE,ELECTRICAL-ELECTRONIC TEST
81014-4

Frequently Asked Questions

What is NSN 5310-00-889-2544?

NSN 5310-00-889-2544 is a Nut,self-Locking,hexagon, manufactured by National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-889-2544?

NSN 5310-00-889-2544 has 26 cross-referenced part numbers: NAS1021A06 (Lawrence Engineering and Supply Inc), 27FH-632 (Sps Technologies, Llc Dba PB Fasteners), NAS1021A06 (Sps Technologies, Llc Dba PB Fasteners), NAS1021A06 (Republic Fastener Mfg. Corp. Dba Arconic Fastening Systems), NAS1021A06 (Qualified Air Components Inc.) and 21 more.

What NSN replaces 5310-00-889-2544?

There are 2 known substitutes for 5310-00-889-2544: 5310-00-550-4617, 4920-01-440-2606. Verify interchangeability with system specifications before substitution.

What are the specifications of MS21045-06?

Key specifications for MS21045-06: Thread Class: 3B; Thread Quantity Per Inch: 32; Locking Feature: PREVAILING TORQUE ALL METAL DESIGN; Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 17 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-889-2544 still in active supply?

NSN 5310-00-889-2544 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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