PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

331548Knob

Lockheed Martin Librascope Corporation · NSN 5355-00-807-6951 · FSC 5355 · No Item Name Available
Verified by PartsTable
NSN 5355-00-807-6951 — this item is cataloged by the U.S. Government under National Stock Number 5355-00-807-6951. Primary manufacturer part number: 331548.
Features
  • Knob — FSC 5355
  • Style Designator: BALL
  • Thread Quantity Per Inch: 18 RECEPTACLE
  • Nominal Thread Size: 0.312 INCHES RECEPTACLE IN
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC) RECEPTACLE
  • Color: RED
  • Attachment Method: SCREW ON
  • Gripping Surface Condition: SMOOTH
Applications
  • General assembly and fastening
  • Structural repair and reinforcement
  • Facility maintenance hardware
General Description

The Knob, cataloged under National Stock Number 5355-00-807-6951, is classified within Federal Supply Class 5355 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Lockheed Martin Librascope Corporation. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5355-00-807-6951
Primary Part Number331548
Item NameKnob
FSC / FSG5355 / 53 — No Item Name Available
ManufacturerLockheed Martin Librascope Corporation
StatusACTIVE
Style DesignatorBALL
Thread Quantity Per Inch18 RECEPTACLE
Nominal Thread Size0.312 INCHES RECEPTACLE IN
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) RECEPTACLE
ColorRED
Attachment MethodSCREW ON
Gripping Surface ConditionSMOOTH
Outside Diameter1.875 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5998-00-205-1371 INTERCHANGEABLE
Circuit Card Assembly
9540-00-879-2336LS4222-2 INTERCHANGEABLE
Angle,structural
Lockheed Martin Corp
9540-01-071-4716 INTERCHANGEABLE
Angle,structural
3455-01-082-231919602 INTERCHANGEABLE
Reamer,machine
Brown & Sharpe, Inc. Div Precision Measuring Instruments, Tesa Usa
5330-01-236-1576 INTERCHANGEABLE
Seal,nonmetallic Strip
9540-01-396-0962 INTERCHANGEABLE
Angle,structural
Cross-Reference Index
Part NumberManufacturer
331548 Lockheed Martin Librascope Corporation (USA)
111-5-16-18 Dimcogray Corporation Dba Dimco-Gray Company (USA)
60378 Cnh Industrial America Llc Dba Cnh America (USA)
Related Parts
5998-00-205-1371INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
9540-00-879-2336INTERCHANGEABLE
ANGLE,STRUCTURAL
LS4222-2
9540-01-071-4716INTERCHANGEABLE
ANGLE,STRUCTURAL
3455-01-082-2319INTERCHANGEABLE
REAMER,MACHINE
19602
5330-01-236-1576INTERCHANGEABLE
SEAL,NONMETALLIC STRIP
9540-01-396-0962INTERCHANGEABLE
ANGLE,STRUCTURAL

Frequently Asked Questions

What is NSN 5355-00-807-6951?

NSN 5355-00-807-6951 is a Knob, manufactured by Lockheed Martin Librascope Corporation, classified under FSC 5355 (No Item Name Available). Status: active.

What are the part numbers for NSN 5355-00-807-6951?

NSN 5355-00-807-6951 has 3 cross-referenced part numbers: 331548 (Lockheed Martin Librascope Corporation), 111-5-16-18 (Dimcogray Corporation Dba Dimco-Gray Company), 60378 (Cnh Industrial America Llc Dba Cnh America).

What NSN replaces 5355-00-807-6951?

There are 6 known substitutes for 5355-00-807-6951: 5998-00-205-1371, 9540-00-879-2336, 9540-01-071-4716 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 331548?

Key specifications for 331548: Style Designator: BALL; Thread Quantity Per Inch: 18 RECEPTACLE; Nominal Thread Size: 0.312 INCHES RECEPTACLE IN; Thread Series Designator: UNIFIED NATIONAL COARSE (UNC) RECEPTACLE. 8 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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