PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21006Nut,plain,knurled

Ocean Technology Inc · NSN 5310-01-112-1251 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-112-1251 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-112-1251. Primary manufacturer part number: 21006.
Features
  • Nut,plain,knurled — FSC 5310
  • Knurl Width: 0.155 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN
  • Thread Class: 2B
  • Nut Style: KNURLED
  • Material: STEEL COMP 303 OVERALL
  • Nut Thickness: 0.500 INCHES NOMINAL IN
  • Thread Quantity Per Inch: 32
  • Small End Length: 0.325 INCHES MINIMUM AND 0.345 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 303 Overall construction
General Description

The Nut,plain,knurled, cataloged under National Stock Number 5310-01-112-1251, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Ocean Technology Inc. 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
NSN5310-01-112-1251
Primary Part Number21006
Item NameNut,plain,knurled
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerOcean Technology Inc
StatusACTIVE
Knurl Width0.155 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN
Thread Class2B
Nut StyleKNURLED
MaterialSTEEL COMP 303 OVERALL
Nut Thickness0.500 INCHES NOMINAL IN
Thread Quantity Per Inch32
Small End Length0.325 INCHES MINIMUM AND 0.345 INCHES MAXIMUM IN
Thread SeriesUNIFIED NATIONAL COARSE (UNC)
Small End Diameter0.250 INCHES NOMINAL IN
Nominal Thread Size0.138 INCHES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5330-00-086-7298 INTERCHANGEABLE
Seal,plain Encased
5945-00-088-252421-006 INTERCHANGEABLE
Relay,electromagnetic
Te Connectivity Corporation
6145-00-192-164321-006 INTERCHANGEABLE
Resistance Wire
Raytheon Company Div Corp
5950-00-251-655321006 INTERCHANGEABLE
Transformer,pulse
Magnetika Inc
5310-00-339-8929NK818-6D INTERCHANGEABLE
Nut
Long-Lok, Llc
5330-00-367-5938119757 INTERCHANGEABLE
Gasket
Mag Aerospace Industries, Llc Div Safran Cabins
5977-00-927-0216 INTERCHANGEABLE
Ring Assembly,electrical Contact
5940-01-235-5857 INTERCHANGEABLE
Terminal Board
5945-01-388-638821.006 INTERCHANGEABLE
Relay,electromagnetic
Northrop Grumman Systems Corporation
4820-01-408-70191727 INTERCHANGEABLE
Seat,valve
Droitcour Co
Cross-Reference Index
Part NumberManufacturer
21006 Ocean Technology Inc (USA)
Related Parts
5330-00-086-7298INTERCHANGEABLE
SEAL,PLAIN ENCASED
5945-00-088-2524INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
21-006
6145-00-192-1643INTERCHANGEABLE
RESISTANCE WIRE
21-006
5950-00-251-6553INTERCHANGEABLE
TRANSFORMER,PULSE
21006
5310-00-339-8929INTERCHANGEABLE
NUT
NK818-6D
5330-00-367-5938INTERCHANGEABLE
GASKET
119757
5977-00-927-0216INTERCHANGEABLE
RING ASSEMBLY,ELECTRICAL CONTACT
5940-01-235-5857INTERCHANGEABLE
TERMINAL BOARD
5945-01-388-6388INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
21.006
4820-01-408-7019INTERCHANGEABLE
SEAT,VALVE
1727
6640-01-531-5290INTERCHANGEABLE
INCUBATOR,BACTERIOLOGICAL
5930-01-693-9478INTERCHANGEABLE
SWITCH,PULL
CS2002-8

Frequently Asked Questions

What is NSN 5310-01-112-1251?

NSN 5310-01-112-1251 is a Nut,plain,knurled, manufactured by Ocean Technology Inc, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-112-1251?

NSN 5310-01-112-1251 has 1 cross-referenced part number: 21006 (Ocean Technology Inc).

What NSN replaces 5310-01-112-1251?

There are 12 known substitutes for 5310-01-112-1251: 5330-00-086-7298, 5945-00-088-2524, 6145-00-192-1643 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21006?

Key specifications for 21006: Knurl Width: 0.155 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN; Thread Class: 2B; Nut Style: KNURLED; Material: STEEL COMP 303 OVERALL. 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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