PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

903-12Nut,plain,hexagon

Littelfuse, Inc. · NSN 5310-00-085-3606 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-085-3606 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-085-3606. Primary manufacturer part number: 903-12.
Features
  • Nut,plain,hexagon — FSC 5310
  • Width Across Flats: 0.687 INCHES NOMINAL IN
  • Bearing Surface Type: FLAT
  • Thread Series: UNS
  • Thread Quantity Per Inch: 24
  • Nominal Thread Size: 0.500 INCHES IN
  • Nut Style: HEXAGON
  • Surface Treatment: CHROMATE ZINC OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Nut,plain,hexagon, cataloged under National Stock Number 5310-00-085-3606, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Littelfuse, Inc.. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-085-3606
Primary Part Number903-12
Item NameNut,plain,hexagon
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerLittelfuse, Inc.
StatusACTIVE
Width Across Flats0.687 INCHES NOMINAL IN
Bearing Surface TypeFLAT
Thread SeriesUNS
Thread Quantity Per Inch24
Nominal Thread Size0.500 INCHES IN
Nut StyleHEXAGON
Surface TreatmentCHROMATE ZINC OVERALL
MaterialSTEEL OVERALL
Thread DirectionRIGHT-HAND
Nut Height0.125 INCHES NOMINAL IN
Thread Pitch Diameters+0.4800 TO 0.4840 INCHES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
3110-00-144-85580073647-0 INTERCHANGEABLE
Bearing,ball,annular
New Holland Construction
5935-00-160-136519313 INTERCHANGEABLE
Socket,plug-in Electronic Compon
Simmonds Precision Products Inc
1680-00-534-388690-3012 INTERCHANGEABLE
Guide Tube,actuator
The Boeing Company Div Legacy Wichita
6110-00-792-9743 INTERCHANGEABLE
Contact Set Motor S
3120-00-913-0178HJ136-101 INTERCHANGEABLE
Bearing,sleeve
U S Bearings
5340-00-915-237216018-B-4 INTERCHANGEABLE
Ferrule,handle
Carey Manufacturing Co, Inc Dba Amatom Electronic Hardware Div Amatom Electronic Hardware
5950-01-052-5951CB236 INTERCHANGEABLE
Coil,radio Frequency
Rockwell Automation, Inc. Dba Rockwell Automation
4710-01-167-4398EEP 160TP INTERCHANGEABLE
Tubing,nonmetallic
Ernst Flow Industries Llc Div Ernst Flow Industries
5120-01-224-974590301-2 INTERCHANGEABLE
Crimping Tool
Te Connectivity Corporation
5995-01-252-840632000-29320-29738-9-1 INTERCHANGEABLE
Cable Assembly,radio Frequency
Huber+suhner Astrolab, Inc. Dba Huber & Suhner Astrolab Inc
Cross-Reference Index
Part NumberManufacturer
2950-0038 Hewlett-Packard Company Dba HP (USA)
903-12 PRIMARY Littelfuse, Inc. (USA)
903-012 Littelfuse, Inc. (USA)
Related Parts
3110-00-144-8558INTERCHANGEABLE
BEARING,BALL,ANNULAR
0073647-0
5935-00-160-1365INTERCHANGEABLE
SOCKET,PLUG-IN ELECTRONIC COMPON
19313
1680-00-534-3886INTERCHANGEABLE
GUIDE TUBE,ACTUATOR
90-3012
6110-00-792-9743INTERCHANGEABLE
CONTACT SET MOTOR S
3120-00-913-0178INTERCHANGEABLE
BEARING,SLEEVE
HJ136-101
5340-00-915-2372INTERCHANGEABLE
FERRULE,HANDLE
16018-B-4
5950-01-052-5951INTERCHANGEABLE
COIL,RADIO FREQUENCY
CB236
4710-01-167-4398INTERCHANGEABLE
TUBING,NONMETALLIC
EEP 160TP
5120-01-224-9745INTERCHANGEABLE
CRIMPING TOOL
90301-2
5995-01-252-8406INTERCHANGEABLE
CABLE ASSEMBLY,RADIO FREQUENCY
32000-29320-29738-9-1

Frequently Asked Questions

What is NSN 5310-00-085-3606?

NSN 5310-00-085-3606 is a Nut,plain,hexagon, manufactured by Littelfuse, Inc., classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-085-3606?

NSN 5310-00-085-3606 has 3 cross-referenced part numbers: 2950-0038 (Hewlett-Packard Company Dba HP), 903-12 (Littelfuse, Inc.), 903-012 (Littelfuse, Inc.).

What NSN replaces 5310-00-085-3606?

There are 10 known substitutes for 5310-00-085-3606: 3110-00-144-8558, 5935-00-160-1365, 1680-00-534-3886 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 903-12?

Key specifications for 903-12: Width Across Flats: 0.687 INCHES NOMINAL IN; Bearing Surface Type: FLAT; Thread Series: UNS; Thread Quantity Per Inch: 24. 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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