PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

8350-15 ITEM 31Setscrew

Velan Valve Corp. · NSN 5305-00-723-9383 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-723-9383 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-723-9383. Primary manufacturer part number: 8350-15 ITEM 31.
Features
  • Setscrew — FSC 5305
  • Thread Class: 3A A
  • Point Style: CUP
  • Head Style: HEADLESS (SETSCREW)
  • Nominal Thread Diameter: 0.250 INCHES IN
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
  • Surface Treatment Document and Classification: QQ-P-416 TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Thread Direction: RIGHT-HAND
Applications
  • Applications requiring Steel Comp 4037 or Steel Comp 4137 or Steel Comp 4140 or Steel Comp 8630 or Steel Comp 8740 Overall construction
General Description

The Setscrew, cataloged under National Stock Number 5305-00-723-9383, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Velan Valve Corp.. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 22 commercial cross-references from 13 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5305-00-723-9383
Primary Part Number8350-15 ITEM 31
Item NameSetscrew
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerVelan Valve Corp.
StatusCANCELLED
Thread Class3A A
Point StyleCUP
Head StyleHEADLESS (SETSCREW)
Nominal Thread Diameter0.250 INCHES IN
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Surface Treatment Document and ClassificationQQ-P-416 TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Thread DirectionRIGHT-HAND
Fastener Length0.500 INCHES NOMINAL IN
Width Across Flats0.125 INCHES NOMINAL IN
Surface TreatmentCADMIUM AND CHROMATE OVERALL
Thread Quantity Per Inch20
Thread Length0.500 INCHES MAXIMUM IN
MaterialSTEEL COMP 4037 OR STEEL COMP 4137 OR STEEL COMP 4140 OR STEEL COMP 8630 OR STEEL COMP 8740 OVERALL
Internal Drive StyleHEXAGON
Hardness Rating45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL
Material Document and Classification66 FED STD ALL MATERIAL RESPONSES OVERALL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 5
5950-00-455-8558 INTERCHANGEABLE
Transformer,radio Frequency
5305-00-724-6739 INTERCHANGEABLE
Setscrew
2840-00-836-4239725347 INTERCHANGEABLE
Plunger,valve,oil P
Teledyne Brown Engineering, Inc. Dba Teledyne Turbine Engines Div Teledyne Turbine Engines
2520-00-891-3923BBC1669 INTERCHANGEABLE
Pressure Plate Assembly,clutch
Sachs-Boge of America
4810-01-224-5840705044 INTERCHANGEABLE
Spool,flow Control
Eaton Aerospace, Llc Dba Jackson South
Cross-Reference Index
Part NumberManufacturer
8350-15 ITEM 31 Velan Valve Corp. (USA)
H75-1/4-20 X 8 Zf Industrieantriebe Witten Gmbh (DEU)
5305PL0567804 Jednolity Indeks Materialowy - Uniform Material Index (POL)
922071 Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer (USA)
F-8278 PC1J Dresser Rand Co Terry Corp Steam Turbine Motor and Generator Co a Joint Venture (USA)
706088 Zf Industrieantriebe Witten Gmbh (DEU)
FFS200 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
A-38515 Zf Industrieantriebe Witten Gmbh (DEU)
5305007239383 E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales
FFS210 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
12Z4PC151 Naval Sea Systems Command (USA)
MS51963-67 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
109A2A5 Zf Industrieantriebe Witten Gmbh (DEU)
55693 ITEM 11 Teikoku Usa Inc. Div Chempump, a Division of Teikoku Usa Inc (USA)
4810-38515-C05 Zf Industrieantriebe Witten Gmbh (DEU)
E3373 PIECE 33 Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer (USA)
MX-261193-3 PIECE 66 The Babcock & Wilcox Company Dba B & W Service Co Div B&w Service Company (USA)
705044 Zf Industrieantriebe Witten Gmbh (DEU)
701-4711389 PIECE 46 Naval Ship Systems Command (USA)
MS51965-55 Zf Industrieantriebe Witten Gmbh (DEU)
Related Parts
5950-00-455-8558INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
5305-00-724-6739INTERCHANGEABLE
SETSCREW
2840-00-836-4239INTERCHANGEABLE
PLUNGER,VALVE,OIL P
725347
2520-00-891-3923INTERCHANGEABLE
PRESSURE PLATE ASSEMBLY,CLUTCH
BBC1669
4810-01-224-5840INTERCHANGEABLE
SPOOL,FLOW CONTROL
705044

Frequently Asked Questions

What is NSN 5305-00-723-9383?

NSN 5305-00-723-9383 is a Setscrew, manufactured by Velan Valve Corp., classified under FSC 5305 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5305-00-723-9383?

NSN 5305-00-723-9383 has 22 cross-referenced part numbers: 8350-15 ITEM 31 (Velan Valve Corp.), H75-1/4-20 X 8 (Zf Industrieantriebe Witten Gmbh), 5305PL0567804 (Jednolity Indeks Materialowy - Uniform Material Index), 922071 (Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer), F-8278 PC1J (Dresser Rand Co Terry Corp Steam Turbine Motor and Generator Co a Joint Venture) and 17 more.

What NSN replaces 5305-00-723-9383?

There are 5 known substitutes for 5305-00-723-9383: 5950-00-455-8558, 5305-00-724-6739, 2840-00-836-4239 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 8350-15 ITEM 31?

Key specifications for 8350-15 ITEM 31: Thread Class: 3A A; Point Style: CUP; Head Style: HEADLESS (SETSCREW); Nominal Thread Diameter: 0.250 INCHES IN. 16 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5305-00-723-9383 still in active supply?

NSN 5305-00-723-9383 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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