PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21125Nut Check

Parker Hannifin Corporation Div Hydraulic Systems Division · NSN 5310-01-212-6013 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-212-6013 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-212-6013. Primary manufacturer part number: 21125.
Features
  • Nut Check — FSC 5310
  • 2 verified cross-references
  • Primary manufacturer: Parker Hannifin Corporation Div Hydraulic Systems Division
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Nut Check, cataloged under National Stock Number 5310-01-212-6013, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Parker Hannifin Corporation Div Hydraulic Systems Division. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameNut Check
FSC / FSG5310 — No Item Name Available (FSG 53)
ManufacturersParker Hannifin Corporation Div Hydraulic Systems Division (CAGE 93835); Zf Industrieantriebe Witten Gmbh (CAGE D9182)
Technical Specifications
ParameterValue
NSN5310-01-212-6013
Primary Part Number21125
Item NameNut Check
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerParker Hannifin Corporation Div Hydraulic Systems Division
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5310-00-006-817221125 INTERCHANGEABLE
Nut,plain,hexagon
Industrial Technologies and Services Llc
4920-01-019-99433-7019 INTERCHANGEABLE
Barrel,pump,valve
Chapin R E Mfg Works Inc
4320-01-408-7254D-5081-65-2482 INTERCHANGEABLE
Seal Assembly,shaft,spring Loade
Buffaloes Fire Pump Inc. Dba R B Pump Co
4810-01-414-806021125-002 INTERCHANGEABLE
Valve,linear,directional Control
Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
4820-01-415-385121125-1003-1 INTERCHANGEABLE
Alignment,rod
Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
4810-01-415-735221125-1001-1 INTERCHANGEABLE
Plunger,actuator
Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
Cross-Reference Index
Part NumberManufacturer
21125 PRIMARY Parker Hannifin Corporation Div Hydraulic Systems Division (USA)
21125 Zf Industrieantriebe Witten Gmbh (DEU)
Related Parts
5310-00-006-8172INTERCHANGEABLE
NUT,PLAIN,HEXAGON
21125
4920-01-019-9943INTERCHANGEABLE
BARREL,PUMP,VALVE
3-7019
4320-01-408-7254INTERCHANGEABLE
SEAL ASSEMBLY,SHAFT,SPRING LOADE
D-5081-65-2482
4810-01-414-8060INTERCHANGEABLE
VALVE,LINEAR,DIRECTIONAL CONTROL
21125-002
4820-01-415-3851INTERCHANGEABLE
ALIGNMENT,ROD
21125-1003-1
4810-01-415-7352INTERCHANGEABLE
PLUNGER,ACTUATOR
21125-1001-1

Frequently Asked Questions

What is NSN 5310-01-212-6013?

NSN 5310-01-212-6013 is a Nut Check, manufactured by Parker Hannifin Corporation Div Hydraulic Systems Division, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-212-6013?

NSN 5310-01-212-6013 has 2 cross-referenced part numbers: 21125 (Parker Hannifin Corporation Div Hydraulic Systems Division), 21125 (Zf Industrieantriebe Witten Gmbh).

What NSN replaces 5310-01-212-6013?

There are 6 known substitutes for 5310-01-212-6013: 5310-00-006-8172, 4920-01-019-9943, 4320-01-408-7254 and 3 more. Verify interchangeability with system specifications before substitution.

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