PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

12Z46PC402Screw,cap,hexagon Head

Naval Sea Systems Command · NSN 5305-00-688-2018 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-688-2018 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-688-2018. Primary manufacturer part number: 12Z46PC402.
Features
  • Screw,cap,hexagon Head — FSC 5305
  • Thread Direction: RIGHT-HAND
  • Minimum Tensile Strength: 80000 POUNDS PER SQUARE INCH LBS
  • Nominal Thread Diameter: 0.250 INCHES IN
  • Thread Quantity Per Inch: 28
  • Material Document and Classification: 66 FED STD ALL MATERIAL RESPONSES OVERALL
  • Material: STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OVERALL
  • Surface Treatment: PASSIVATE OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 302 or Steel Comp 303 or Steel Comp 304 or Steel Comp 305 or Steel Comp 316 Overall construction
General Description

The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-00-688-2018, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Naval Sea Systems Command. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 15 commercial cross-references from 11 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5305-00-688-2018
Primary Part Number12Z46PC402
Item NameScrew,cap,hexagon Head
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerNaval Sea Systems Command
StatusCANCELLED
Thread DirectionRIGHT-HAND
Minimum Tensile Strength80000 POUNDS PER SQUARE INCH LBS
Nominal Thread Diameter0.250 INCHES IN
Thread Quantity Per Inch28
Material Document and Classification66 FED STD ALL MATERIAL RESPONSES OVERALL
MaterialSTEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OVERALL
Surface TreatmentPASSIVATE OVERALL
Thread Class2A A
Thread Length0.875 INCHES MAXIMUM IN
Head Height0.150 INCHES MINIMUM AND 0.163 INCHES MAXIMUM IN
Fastener Length0.875 INCHES NOMINAL IN
Width Between Flats0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
Surface Treatment Document and ClassificationQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Thread Series DesignatorUNF
Head StyleHEXAGON
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 4
5330-00-128-2492 INTERCHANGEABLE
Packing with Retainer
3040-01-109-439928363 INTERCHANGEABLE
Cam,control
Moog Inc. Dba Ampac-Isp Corp
5365-01-421-199428363 INTERCHANGEABLE
Spacer,plate
Ontic Engineering and Manufacturing, Inc.
4930-01-519-9117PL15841202-1 INTERCHANGEABLE
Filter-Lubricator Assembly,airli
Jered Llc
Cross-Reference Index
Part NumberManufacturer
12Z46PC402 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
0419-417 Lockheed Martin Corporation Div Rms - Mitchel Field (USA)
FF-S-85 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
5305PL0977822 Jednolity Indeks Materialowy - Uniform Material Index (POL)
MS35308-307B Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
5-4-1317-5-16 W1d1 Natick Soldier Center Dba Us Army Ccdc Soldier Center Div Combat Capabilities Development Command - Soldier Center (USA)
MS35308-307 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MS35308-7 National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
5-4-1317-5-16 Brunswick Corp Defense Div (USA)
M35308-307 Zf Industrieantriebe Witten Gmbh (DEU)
MS35308-7 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
28363 Dresser, Llc (USA)
12Z46PC402 PRIMARY Naval Sea Systems Command (USA)
NASM35308 National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
MS35308-307 PRIMARY National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
Related Parts
5330-00-128-2492INTERCHANGEABLE
PACKING WITH RETAINER
3040-01-109-4399INTERCHANGEABLE
CAM,CONTROL
28363
5365-01-421-1994INTERCHANGEABLE
SPACER,PLATE
28363
4930-01-519-9117INTERCHANGEABLE
FILTER-LUBRICATOR ASSEMBLY,AIRLI
PL15841202-1

Frequently Asked Questions

What is NSN 5305-00-688-2018?

NSN 5305-00-688-2018 is a Screw,cap,hexagon Head, manufactured by Naval Sea Systems Command, classified under FSC 5305 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5305-00-688-2018?

NSN 5305-00-688-2018 has 15 cross-referenced part numbers: 12Z46PC402 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 0419-417 (Lockheed Martin Corporation Div Rms - Mitchel Field), FF-S-85 (Federal Specifications Promulgated by General Services Administration Washington DC), 5305PL0977822 (Jednolity Indeks Materialowy - Uniform Material Index), MS35308-307B (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M) and 10 more.

What NSN replaces 5305-00-688-2018?

There are 4 known substitutes for 5305-00-688-2018: 5330-00-128-2492, 3040-01-109-4399, 5365-01-421-1994 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 12Z46PC402?

Key specifications for 12Z46PC402: Thread Direction: RIGHT-HAND; Minimum Tensile Strength: 80000 POUNDS PER SQUARE INCH LBS; Nominal Thread Diameter: 0.250 INCHES IN; Thread Quantity Per Inch: 28. 16 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5305-00-688-2018 still in active supply?

NSN 5305-00-688-2018 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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