PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A3123Nut,limit Step

Lockheed Martin Corporation Div Rms · NSN 5310-00-437-8946 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-437-8946 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-437-8946. Primary manufacturer part number: A3123.
Features
  • Nut,limit Step — FSC 5310
  • 2 verified cross-references
  • Primary manufacturer: Lockheed Martin Corporation Div Rms
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Nut,limit Step, cataloged under National Stock Number 5310-00-437-8946, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Lockheed Martin Corporation Div Rms. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameNut,limit Step
FSC / FSG5310 — No Item Name Available (FSG 53)
ManufacturersLockheed Martin Corporation Div Rms (CAGE 03538); Martin Marietta Technologies Inc Sub of Martin Marietta Corp Aero and Naval Systems (CAGE 54497)
Technical Specifications
ParameterValue
NSN5310-00-437-8946
Primary Part NumberA3123
Item NameNut,limit Step
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerLockheed Martin Corporation Div Rms
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5905-00-859-7908 INTERCHANGEABLE
Resistor,thermal
Cross-Reference Index
Part NumberManufacturer
A3123 PRIMARY Lockheed Martin Corporation Div Rms (USA)
A3123 Martin Marietta Technologies Inc Sub of Martin Marietta Corp Aero and Naval Systems (USA)
Related Parts
5905-00-859-7908INTERCHANGEABLE
RESISTOR,THERMAL

Frequently Asked Questions

What is NSN 5310-00-437-8946?

NSN 5310-00-437-8946 is a Nut,limit Step, manufactured by Lockheed Martin Corporation Div Rms, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-437-8946?

NSN 5310-00-437-8946 has 2 cross-referenced part numbers: A3123 (Lockheed Martin Corporation Div Rms), A3123 (Martin Marietta Technologies Inc Sub of Martin Marietta Corp Aero and Naval Systems).

What NSN replaces 5310-00-437-8946?

There is 1 known substitute for 5310-00-437-8946: 5905-00-859-7908. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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