PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

803-5001003 PIECE NO. 156Screw,cap,socket Head

Naval Sea Systems Command · NSN 5305-01-339-9560 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-01-339-9560 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-339-9560. Primary manufacturer part number: 803-5001003 PIECE NO. 156.
Features
  • Screw,cap,socket Head — FSC 5305
  • Thread Class: 2A A
  • Thread Quantity Per Inch: 14
  • Thread Direction: RIGHT-HAND
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
  • Material: NICKEL ALLOY OVERALL
  • Departure From Cited Document: MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS
  • Reference Number Differentiating Characteristics: QUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Nickel Alloy Overall construction
General Description

The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-339-9560, 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 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 14 commercial cross-references from 3 manufacturers, 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
NSN5305-01-339-9560
Primary Part Number803-5001003 PIECE NO. 156
Item NameScrew,cap,socket Head
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerNaval Sea Systems Command
StatusACTIVE
Thread Class2A A
Thread Quantity Per Inch14
Thread DirectionRIGHT-HAND
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
MaterialNICKEL ALLOY OVERALL
Departure From Cited DocumentMATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS
Reference Number Differentiating CharacteristicsQUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS
Head StyleHEXAGON
Criticality Code JustificationZZZW
Nominal Thread Diameter0.438 INCHES IN
Internal Drive StyleHEXAGON
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5305-01-170-4119 INTERCHANGEABLE
Screw,cap,hexagon Head
5305-01-172-5923 INTERCHANGEABLE
Screw,machine
5307-01-208-5421 INTERCHANGEABLE
Stud,continuous Thread
5307-01-227-2872 INTERCHANGEABLE
Stud,continuous Thread
5307-01-289-7148 INTERCHANGEABLE
Stud,plain
5307-01-306-7522 INTERCHANGEABLE
Stud,continuous Thread
5307-01-306-7538 INTERCHANGEABLE
Stud,continuous Thread
5307-01-321-7264 INTERCHANGEABLE
Stud,continuous Thread
5305-01-348-1724 INTERCHANGEABLE
Screw,cap,socket Head
5305-01-406-8548 INTERCHANGEABLE
Screw,cap,socket Head
Cross-Reference Index
Part NumberManufacturer
803-5001003 PIECE NO. 156 Naval Sea Systems Command (USA)
MIL-DTL-1222 TYPE IIL1 Naval Inventory Control Point Mechanicsburg (USA)
QQ-N-286 GRADE 500 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
803-5001003-X7XX-110L1 Naval Inventory Control Point Mechanicsburg (USA)
803-5001003 PIECE NO. 156L1 Naval Inventory Control Point Mechanicsburg (USA)
7/16-14UNRC-3A X 4 1/2 INCHES Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
7/16-14UNRC-3A X 4 1/2 INCHESL1 Naval Inventory Control Point Mechanicsburg (USA)
QQ-N-286 GRADE 500L1 Naval Inventory Control Point Mechanicsburg (USA)
5001003-X7XX-110L1 Naval Inventory Control Point Mechanicsburg (USA)
MIL-DTL-1222 TYPE II Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
5001003-X7XX-110 Naval Sea Systems Command (USA)
803-5001003-X7XX-110 Naval Sea Systems Command (USA)
5001003-M711 ITEM M 110L1 Naval Inventory Control Point Mechanicsburg (USA)
5001003-M711 ITEM M 110 Naval Sea Systems Command (USA)
Related Parts
5305-01-170-4119INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
5305-01-172-5923INTERCHANGEABLE
SCREW,MACHINE
5307-01-208-5421INTERCHANGEABLE
STUD,CONTINUOUS THREAD
5307-01-227-2872INTERCHANGEABLE
STUD,CONTINUOUS THREAD
5307-01-289-7148INTERCHANGEABLE
STUD,PLAIN
5307-01-306-7522INTERCHANGEABLE
STUD,CONTINUOUS THREAD
5307-01-306-7538INTERCHANGEABLE
STUD,CONTINUOUS THREAD
5307-01-321-7264INTERCHANGEABLE
STUD,CONTINUOUS THREAD
5305-01-348-1724INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
5305-01-406-8548INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
5305-01-423-8881INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
5305-01-425-7874INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD

Frequently Asked Questions

What is NSN 5305-01-339-9560?

NSN 5305-01-339-9560 is a Screw,cap,socket Head, manufactured by Naval Sea Systems Command, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-01-339-9560?

NSN 5305-01-339-9560 has 14 cross-referenced part numbers: 803-5001003 PIECE NO. 156 (Naval Sea Systems Command), MIL-DTL-1222 TYPE IIL1 (Naval Inventory Control Point Mechanicsburg), QQ-N-286 GRADE 500 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 803-5001003-X7XX-110L1 (Naval Inventory Control Point Mechanicsburg), 803-5001003 PIECE NO. 156L1 (Naval Inventory Control Point Mechanicsburg) and 9 more.

What NSN replaces 5305-01-339-9560?

There are 12 known substitutes for 5305-01-339-9560: 5305-01-170-4119, 5305-01-172-5923, 5307-01-208-5421 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 803-5001003 PIECE NO. 156?

Key specifications for 803-5001003 PIECE NO. 156: Thread Class: 2A A; Special Features: OVER ALL LENGTH 4.50IN IN; Thread Quantity Per Inch: 14; Thread Direction: RIGHT-HAND. 13 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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