PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

UL-256-1CWNut,self-Locking,clinch

Penn Engineering & Manufacturing Corp · NSN 5310-00-949-3858 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-949-3858 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-949-3858. Primary manufacturer part number: UL-256-1CW.
Features
  • Nut,self-Locking,clinch — FSC 5310
  • Pilot Diameter: 0.104 INCHES NOMINAL IN
  • Nominal Thread Size: 0.086 INCHES IN
  • Material: STEEL CORROSION RESISTING OVERALL
  • Surface Treatment: PASSIVATE OVERALL
  • Thread Class: 3B
  • Pilot Length: 0.065 INCHES NOMINAL IN
  • Thread Direction: RIGHT-HAND
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Corrosion Resisting Overall construction
General Description

The Nut,self-Locking,clinch, cataloged under National Stock Number 5310-00-949-3858, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Penn Engineering & Manufacturing Corp. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 13 commercial cross-references from 12 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
NSN5310-00-949-3858
Primary Part NumberUL-256-1CW
Item NameNut,self-Locking,clinch
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerPenn Engineering & Manufacturing Corp
StatusCANCELLED
Pilot Diameter0.104 INCHES NOMINAL IN
Nominal Thread Size0.086 INCHES IN
MaterialSTEEL CORROSION RESISTING OVERALL
Surface TreatmentPASSIVATE OVERALL
Thread Class3B
Pilot Length0.065 INCHES NOMINAL IN
Thread DirectionRIGHT-HAND
Thread Quantity Per Inch56
Temp Rating450.0 FAHRENHEIT NOMINAL DEGF
LubricationDRY FILM LUBRICANT
Nut StyleCLINCH
Nut Diameter0.156 INCHES NOMINAL IN
Thread SeriesUNIFIED NATIONAL COARSE (UNC)
Locking FeaturePREVAILING TORQUE ALL METAL DESIGN
Nut Height0.096 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
5325-00-809-88671418 INTERCHANGEABLE
Grommet,nonmetallic
Atlantic India Rubber Co Inc
5310-01-502-5447UL256-1 INTERCHANGEABLE
Nut,self-Locking,clinch
Penn Engineering & Manufacturing Corp
Cross-Reference Index
Part NumberManufacturer
10121870 Nimikkeistokeskus Ncb Finland (FIN)
5310PL0150187 Jednolity Indeks Materialowy - Uniform Material Index (POL)
45047-0008 Honeywell International Inc Dba Honeywell (USA)
990245-4 L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products (USA)
UL-256-1CW PRIMARY Penn Engineering & Manufacturing Corp (USA)
505015-2 Cardion Inc (USA)
UL-256-1 Penn Engineering & Manufacturing Corp (USA)
15520023-9 Safran (FRA)
15520023-9 Safran Electronics & Defense (FRA)
N235A005-4 Telephonics Corp (USA)
505015-2 Aimtron Systems, Llc (USA)
7601656-8 Ge Aviation Systems Llc Dba Ge Aviation (USA)
N235A005-4 Instrument Systems Corp (USA)
Related Parts
5325-00-809-8867INTERCHANGEABLE
GROMMET,NONMETALLIC
1418
5310-01-502-5447INTERCHANGEABLE
NUT,SELF-LOCKING,CLINCH
UL256-1

Frequently Asked Questions

What is NSN 5310-00-949-3858?

NSN 5310-00-949-3858 is a Nut,self-Locking,clinch, manufactured by Penn Engineering & Manufacturing Corp, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-949-3858?

NSN 5310-00-949-3858 has 13 cross-referenced part numbers: 10121870 (Nimikkeistokeskus Ncb Finland), 5310PL0150187 (Jednolity Indeks Materialowy - Uniform Material Index), 45047-0008 (Honeywell International Inc Dba Honeywell), 990245-4 (L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products), UL-256-1CW (Penn Engineering & Manufacturing Corp) and 8 more.

What NSN replaces 5310-00-949-3858?

There are 2 known substitutes for 5310-00-949-3858: 5325-00-809-8867, 5310-01-502-5447. Verify interchangeability with system specifications before substitution.

What are the specifications of UL-256-1CW?

Key specifications for UL-256-1CW: Pilot Diameter: 0.104 INCHES NOMINAL IN; Nominal Thread Size: 0.086 INCHES IN; Material: STEEL CORROSION RESISTING OVERALL; Surface Treatment: PASSIVATE OVERALL. 15 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-949-3858 still in active supply?

NSN 5310-00-949-3858 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.
PartsTable Design LLC · partstable.com