PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

6121Stud,plain

Norfolk Naval Shipyard · NSN 5307-00-637-9005 · FSC 5307 · No Item Name Available
Verified by PartsTable
NSN 5307-00-637-9005 — this item is cataloged by the U.S. Government under National Stock Number 5307-00-637-9005. Primary manufacturer part number: 6121.
Features
  • Stud,plain — FSC 5307
  • Thread Class: 2A NUT THREAD A
  • Nominal Thread Size: 0.438 INCHES NUT THREAD IN
  • Departure From Cited Designator: AS MODIFIED BY NUT END THREAD SIZE AND SERIES/TYPE DESIGNATOR AND AS MODIFIED BY STUD END THREAD SIZE AND SERIES/TYPE DESIGNATOR AND AS MODIFIED BY NUT END THREAD LENGTH AND AS MODIFIED BY STUD END THREAD LENGTH
  • Thread Direction: RIGHT-HAND STUD THREAD
  • Material: STEEL
  • Thread Series Designator: UNF NUT THREAD
  • Nominal Thread Size: 0.438 INCHES STUD THREAD IN
Applications
  • Applications requiring Steel construction
General Description

The Stud,plain, cataloged under National Stock Number 5307-00-637-9005, is classified within Federal Supply Class 5307 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Norfolk Naval Shipyard. Government technical data includes 17 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
NSN5307-00-637-9005
Primary Part Number6121
Item NameStud,plain
FSC / FSG5307 / 53 — No Item Name Available
ManufacturerNorfolk Naval Shipyard
StatusACTIVE
Thread Class2A NUT THREAD A
Nominal Thread Size0.438 INCHES NUT THREAD IN
Departure From Cited DesignatorAS MODIFIED BY NUT END THREAD SIZE AND SERIES/TYPE DESIGNATOR AND AS MODIFIED BY STUD END THREAD SIZE AND SERIES/TYPE DESIGNATOR AND AS MODIFIED BY NUT END THREAD LENGTH AND AS MODIFIED BY STUD END THREAD LENGTH
Thread DirectionRIGHT-HAND STUD THREAD
MaterialSTEEL
Thread Series DesignatorUNF NUT THREAD
Nominal Thread Size0.438 INCHES STUD THREAD IN
Thread Length0.375 INCHES MINIMUM STUD THREAD IN
Surface TreatmentCADMIUM OVERALL
Hardness Rating95.0 ROCKWELL B MAXIMUM
Thread Series DesignatorUNF STUD THREAD
Nondefinitive Spec/std Data1 TYPE AND B STYLE AND 1 GRADE
Thread Quantity Per Inch20 NUT THREAD
Thread DirectionRIGHT-HAND NUT THREAD
Thread Class5A STUD THREAD A
Thread Quantity Per Inch20 STUD THREAD
Thread Length0.750 INCHES MINIMUM NUT THREAD IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
1005-00-019-78916121 INTERCHANGEABLE
Plunger,trigger
Smith & Wesson Sales Company
5210-00-050-5143436.1MRL-150 INTERCHANGEABLE
Caliper,micrometer,outside
L.s. Starrett Company (the) Div Tool Division
3110-00-100-362152400 INTERCHANGEABLE
Cone and Rollers,tapered Roller
The Timken Corporation
3110-00-142-4286 INTERCHANGEABLE
Bearing,ball,airframe
4930-00-275-7900 INTERCHANGEABLE
Oiler,hand
3455-00-293-052408720 INTERCHANGEABLE
Cutter,milling,metal Slitting
Niagara Cutter Inc
6250-00-299-60962036 INTERCHANGEABLE
Lampholder
Cole Hersee Company
9905-00-474-35816121 INTERCHANGEABLE
Plate,instruction
Hiller Aircraft Corporation
5305-00-591-332021027 INTERCHANGEABLE
Screw,machine
Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
4730-00-603-43716-121 INTERCHANGEABLE
Coupling Half,quick Disconnect
Transdigm Inc Div Adelwiggins Group
Cross-Reference Index
Part NumberManufacturer
6121 Norfolk Naval Shipyard (USA)
Related Parts
1005-00-019-7891INTERCHANGEABLE
PLUNGER,TRIGGER
6121
5210-00-050-5143INTERCHANGEABLE
CALIPER,MICROMETER,OUTSIDE
436.1MRL-150
3110-00-100-3621INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
52400
3110-00-142-4286INTERCHANGEABLE
BEARING,BALL,AIRFRAME
4930-00-275-7900INTERCHANGEABLE
OILER,HAND
3455-00-293-0524INTERCHANGEABLE
CUTTER,MILLING,METAL SLITTING
08720
6250-00-299-6096INTERCHANGEABLE
LAMPHOLDER
2036
9905-00-474-3581INTERCHANGEABLE
PLATE,INSTRUCTION
6121
5305-00-591-3320INTERCHANGEABLE
SCREW,MACHINE
21027
4730-00-603-4371INTERCHANGEABLE
COUPLING HALF,QUICK DISCONNECT
6-121
5950-00-681-7181INTERCHANGEABLE
TRANSFORMER,POWER
C7742826P001
5310-00-927-0421INTERCHANGEABLE
NUT,TENSION

Frequently Asked Questions

What is NSN 5307-00-637-9005?

NSN 5307-00-637-9005 is a Stud,plain, manufactured by Norfolk Naval Shipyard, classified under FSC 5307 (No Item Name Available). Status: active.

What are the part numbers for NSN 5307-00-637-9005?

NSN 5307-00-637-9005 has 1 cross-referenced part number: 6121 (Norfolk Naval Shipyard).

What NSN replaces 5307-00-637-9005?

There are 12 known substitutes for 5307-00-637-9005: 1005-00-019-7891, 5210-00-050-5143, 3110-00-100-3621 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 6121?

Key specifications for 6121: Thread Class: 2A NUT THREAD A; Nominal Thread Size: 0.438 INCHES NUT THREAD IN; Departure From Cited Designator: AS MODIFIED BY NUT END THREAD SIZE AND SERIES/TYPE DESIGNATOR AND AS MODIFIED BY STUD END THREAD SIZE AND SERIES/TYPE DESIGNATOR AND AS MODIFIED BY NUT END THREAD LENGTH AND AS MODIFIED BY STUD END THREAD LENGTH; Thread Direction: RIGHT-HAND STUD THREAD. 18 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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