PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20001-1Nut,plain,hexagon

Malabar · NSN 5310-01-139-5370 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-139-5370 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-139-5370. Primary manufacturer part number: 20001-1.
Features
  • Nut,plain,hexagon — FSC 5310
  • Thread Class: 3B3B
  • Bearing Surface Type: FLATFLAT
  • Thread Series: UNFUNF
  • Nominal Thread Size: 0.750 INCHES0.750 INCHES IN
  • Thread Quantity Per Inch: 1616
  • Width Across Flats: 1.000 INCHES NOMINAL1.000 INCHES NOMINAL IN
  • Material: ALUMINUM ALLOY OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Aluminum Alloy Overall construction
General Description

The Nut,plain,hexagon, cataloged under National Stock Number 5310-01-139-5370, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Malabar. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-139-5370
Primary Part Number20001-1
Item NameNut,plain,hexagon
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerMalabar
StatusACTIVE
Thread Class3B3B
Bearing Surface TypeFLATFLAT
Thread SeriesUNFUNF
Nominal Thread Size0.750 INCHES0.750 INCHES IN
Thread Quantity Per Inch1616
Width Across Flats1.000 INCHES NOMINAL1.000 INCHES NOMINAL IN
MaterialALUMINUM ALLOY OVERALL
Nut Height0.257 INCHES NOMINAL0.257 INCHES NOMINAL IN
Nut StyleHEXAGONHEXAGON
Thread DirectionRIGHT-HANDRIGHT-HAND
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4820-00-106-733320001-1 INTERCHANGEABLE
Seat
Circor Aerospace, Inc. Dba Circor Aerospace Inc
5950-00-565-2687 INTERCHANGEABLE
Transformer,power
5330-00-763-16342000-11 INTERCHANGEABLE
Seal,air Bleed Rela
Bal Seal Engineering, Inc.
6220-00-926-1331200011 INTERCHANGEABLE
Light,marker,clearance
Betts Industries, Inc.
5331-00-968-1864AS3582-213 INTERCHANGEABLE
O-Ring
Sae International Dba Sae International
5961-00-976-1302200011 INTERCHANGEABLE
Transistor
Astronics Test Systems Inc
3110-01-019-3265SJ7495210 INTERCHANGEABLE
Bearing,roller,needle
Rbc Bearings Incorporated Div West Trenton Division
3040-01-169-7321 INTERCHANGEABLE
Shaft,shouldered
6515-01-238-6645200.011 INTERCHANGEABLE
Screw,bone
Depuy Synthes Sales Inc Dba Depuy Synthes Trauma Div Depuy Synthes Sales, Inc., D/b/a Depuy Synthes Trauma
5306-01-360-100212759-00189 INTERCHANGEABLE
Bolt,machine
Fastenal Company Dba Fastenal Co
Cross-Reference Index
Part NumberManufacturer
20001-1 PRIMARY Malabar (USA)
Related Parts
4820-00-106-7333INTERCHANGEABLE
SEAT
20001-1
5950-00-565-2687INTERCHANGEABLE
TRANSFORMER,POWER
5330-00-763-1634INTERCHANGEABLE
SEAL,AIR BLEED RELA
2000-11
6220-00-926-1331INTERCHANGEABLE
LIGHT,MARKER,CLEARANCE
200011
5331-00-968-1864INTERCHANGEABLE
O-RING
AS3582-213
5961-00-976-1302INTERCHANGEABLE
TRANSISTOR
200011
3110-01-019-3265INTERCHANGEABLE
BEARING,ROLLER,NEEDLE
SJ7495210
3040-01-169-7321INTERCHANGEABLE
SHAFT,SHOULDERED
6515-01-238-6645INTERCHANGEABLE
SCREW,BONE
200.011
5306-01-360-1002INTERCHANGEABLE
BOLT,MACHINE
12759-00189
5365-01-488-5191INTERCHANGEABLE
PLUG,MACHINE THREAD
200011
6515-01-491-2178INTERCHANGEABLE
LOOP,CERUMEN LIGHT,ADULT
20-0011

Frequently Asked Questions

What is NSN 5310-01-139-5370?

NSN 5310-01-139-5370 is a Nut,plain,hexagon, manufactured by Malabar, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-139-5370?

NSN 5310-01-139-5370 has 1 cross-referenced part number: 20001-1 (Malabar).

What NSN replaces 5310-01-139-5370?

There are 12 known substitutes for 5310-01-139-5370: 4820-00-106-7333, 5950-00-565-2687, 5330-00-763-1634 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20001-1?

Key specifications for 20001-1: Thread Class: 3B3B; Bearing Surface Type: FLATFLAT; Thread Series: UNFUNF; Nominal Thread Size: 0.750 INCHES0.750 INCHES IN. 10 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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