PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

33D4C12Nut,plain,hexagon

Lamson and Sessions Co the · NSN 5310-00-989-1874 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-989-1874 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-989-1874. Primary manufacturer part number: 33D4C12.
Features
  • Nut,plain,hexagon — FSC 5310
  • Thread Direction: RIGHT-HAND
  • Nominal Thread Size: 0.750 INCHES IN
  • Thread Series: UNIFIED NATIONAL COARSE (UNC)
  • Bearing Surface Type: CHAMFERED OR WASHER FACED
  • Thread Quantity Per Inch: 10
  • Nut Height: 0.734 INCHES NOMINAL IN
  • Nut Style: HEXAGON
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Corrosion Resisting Overall construction
General Description

The Nut,plain,hexagon, cataloged under National Stock Number 5310-00-989-1874, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Lamson and Sessions Co the. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 10 commercial cross-references from 8 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-989-1874
Primary Part Number33D4C12
Item NameNut,plain,hexagon
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerLamson and Sessions Co the
StatusCANCELLED
Thread DirectionRIGHT-HAND
Nominal Thread Size0.750 INCHES IN
Thread SeriesUNIFIED NATIONAL COARSE (UNC)
Bearing Surface TypeCHAMFERED OR WASHER FACED
Thread Quantity Per Inch10
Nut Height0.734 INCHES NOMINAL IN
Nut StyleHEXAGON
Thread Class2B
Width Across Flats1.231 INCHES NOMINAL IN
Specification/standard Data81348-FF-N-836 GOVERNMENT STANDARD
MaterialSTEEL CORROSION RESISTING OVERALL
Nondefinitive Spec/std Data2 TYPE AND 11 STYLE
Material Document and ClassificationQQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Surface TreatmentPASSIVATE OVERALL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5975-00-084-1925 INTERCHANGEABLE
Mounting Base,electrical Equipme
3805-00-371-6146 INTERCHANGEABLE
Link,drag,adjustabl
5910-00-392-5931 INTERCHANGEABLE
Retainer,capacitor
3030-00-777-954715530 INTERCHANGEABLE
Belt,v
Carlisle Power Transmission Products Inc
3110-00-901-1702 INTERCHANGEABLE
Bearing,ball,annular
1630-01-103-6919 INTERCHANGEABLE
Shoe Assy,friction
4510-01-143-572815535 INTERCHANGEABLE
Commode,field
Thetford Corp
5310-01-147-669915535 INTERCHANGEABLE
Washer,lock
Cooper Cameron Corp Cooper Cameron Valves Div
4130-01-228-3399 INTERCHANGEABLE
Cooler Unit,air
4130-01-229-33981023-00-D INTERCHANGEABLE
Cooler Unit,air
Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil
Cross-Reference Index
Part NumberManufacturer
33D4C12 Lamson and Sessions Co the (USA)
VBP33D4C12 Sps Technologies, Llc Dba PB Fasteners (USA)
33D4C12 Sintz Claude Inc (USA)
FF-N-836 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
EW-2300V PC 618 DC Fabricators Inc (USA)
FF-N-836E TYPE 2, ST 4 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
33D4C12 Itt Grinnell Corp (USA)
21792N PC 18 Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
15535 Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
VBP33D4C12 Howmet Global Fastening Systems Inc Div Torrance Operations (USA)
Related Parts
5975-00-084-1925INTERCHANGEABLE
MOUNTING BASE,ELECTRICAL EQUIPME
3805-00-371-6146INTERCHANGEABLE
LINK,DRAG,ADJUSTABL
5910-00-392-5931INTERCHANGEABLE
RETAINER,CAPACITOR
3030-00-777-9547INTERCHANGEABLE
BELT,V
15530
3110-00-901-1702INTERCHANGEABLE
BEARING,BALL,ANNULAR
1630-01-103-6919INTERCHANGEABLE
SHOE ASSY,FRICTION
4510-01-143-5728INTERCHANGEABLE
COMMODE,FIELD
15535
5310-01-147-6699INTERCHANGEABLE
WASHER,LOCK
15535
4130-01-228-3399INTERCHANGEABLE
COOLER UNIT,AIR
4130-01-229-3398INTERCHANGEABLE
COOLER UNIT,AIR
1023-00-D
6240-01-344-6967INTERCHANGEABLE
LAMP,INCANDESCENT
115PAR38/SP/RP
5310-01-467-8182INTERCHANGEABLE
NUT,PLAIN,HEXAGON

Frequently Asked Questions

What is NSN 5310-00-989-1874?

NSN 5310-00-989-1874 is a Nut,plain,hexagon, manufactured by Lamson and Sessions Co the, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-989-1874?

NSN 5310-00-989-1874 has 10 cross-referenced part numbers: 33D4C12 (Lamson and Sessions Co the), VBP33D4C12 (Sps Technologies, Llc Dba PB Fasteners), 33D4C12 (Sintz Claude Inc), FF-N-836 (Federal Specifications Promulgated by General Services Administration Washington DC), EW-2300V PC 618 (DC Fabricators Inc) and 5 more.

What NSN replaces 5310-00-989-1874?

There are 12 known substitutes for 5310-00-989-1874: 5975-00-084-1925, 3805-00-371-6146, 5910-00-392-5931 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 33D4C12?

Key specifications for 33D4C12: Thread Direction: RIGHT-HAND; Nominal Thread Size: 0.750 INCHES IN; Thread Series: UNIFIED NATIONAL COARSE (UNC); Bearing Surface Type: CHAMFERED OR WASHER FACED. 14 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-989-1874 still in active supply?

NSN 5310-00-989-1874 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