PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2642-774-01 ITEM 31L1Screw,machine

Naval Inventory Control Point Mechanicsburg · NSN 5305-01-172-5923 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-01-172-5923 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-172-5923. Primary manufacturer part number: 2642-774-01 ITEM 31L1.
Features
  • Screw,machine — FSC 5305
  • Thread Direction: RIGHT-HAND
  • Criticality Code Justification: ZZZX
  • Departure From Cited Designator: MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS
  • Screw Material: NICKEL ALLOY
  • Thread Quantity Per Inch: 11
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
  • Fastener Length: 2.600 INCHES NOMINAL IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Screw,machine, cataloged under National Stock Number 5305-01-172-5923, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 16 commercial cross-references from 4 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
NSN5305-01-172-5923
Primary Part Number2642-774-01 ITEM 31L1
Item NameScrew,machine
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerNaval Inventory Control Point Mechanicsburg
StatusACTIVE
Thread DirectionRIGHT-HAND
Criticality Code JustificationZZZX
Departure From Cited DesignatorMATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS
Screw MaterialNICKEL ALLOY
Thread Quantity Per Inch11
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Fastener Length2.600 INCHES NOMINAL IN
Thread Length2.375 INCHES NOMINAL IN
Thread Class3A A
Nominal Thread Diameter0.625 INCHES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5305-01-170-4119 INTERCHANGEABLE
Screw,cap,hexagon Head
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
5305-01-339-9560 INTERCHANGEABLE
Screw,cap,socket Head
5305-01-348-1724 INTERCHANGEABLE
Screw,cap,socket Head
5305-01-544-9792 INTERCHANGEABLE
Screw,cap,socket Head
Cross-Reference Index
Part NumberManufacturer
2642-774-01 ITEM 31L1 Naval Inventory Control Point Mechanicsburg (USA)
QQ-N-286, GRADE 500 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
FF-S-86, TYPE VI SELF-LOCKINGL1 Naval Inventory Control Point Mechanicsburg (USA)
5/8-11UNC-3A X 2 3/8 INCHESL1 Naval Inventory Control Point Mechanicsburg (USA)
FF-S-86 TYPE VI QQ-N-286 GR500L1 Naval Inventory Control Point Mechanicsburg (USA)
5/8-11UNC-3A X 2 3/8 INCHES Federal Specifications Promulgated by General Services Administration Washington DC (USA)
845-4558737 ITEM 31L1 Naval Inventory Control Point Mechanicsburg (USA)
845-4558737 ITEM 31 Naval Ship Systems Command (USA)
5/8-11UNC-3A X 2 3/8SELF-LOCKI Federal Specifications Promulgated by General Services Administration Washington DC (USA)
FF-S-86, TYPE VI SELF-LOCKING Federal Specifications Promulgated by General Services Administration Washington DC (USA)
FF-S-86 TYPE VI QQ-N-286 GR500 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
QQ-N-286, GRADE 500L1 Naval Inventory Control Point Mechanicsburg (USA)
2642-774-01 ITEM 31 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
2642-774-01 ITEM 31 Naval Ship Systems Command (USA)
845-4558737 ITEM 31 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
5/8-11UNC-3A X 2 3/8SELF-LOCKIL1 Naval Inventory Control Point Mechanicsburg (USA)
Related Parts
5305-01-170-4119INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
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
5305-01-339-9560INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
5305-01-348-1724INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
5305-01-544-9792INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
5305-01-545-0118INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
5305-01-545-0168INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD

Frequently Asked Questions

What is NSN 5305-01-172-5923?

NSN 5305-01-172-5923 is a Screw,machine, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-01-172-5923?

NSN 5305-01-172-5923 has 16 cross-referenced part numbers: 2642-774-01 ITEM 31L1 (Naval Inventory Control Point Mechanicsburg), QQ-N-286, GRADE 500 (Federal Specifications Promulgated by General Services Administration Washington DC), FF-S-86, TYPE VI SELF-LOCKINGL1 (Naval Inventory Control Point Mechanicsburg), 5/8-11UNC-3A X 2 3/8 INCHESL1 (Naval Inventory Control Point Mechanicsburg), FF-S-86 TYPE VI QQ-N-286 GR500L1 (Naval Inventory Control Point Mechanicsburg) and 11 more.

What NSN replaces 5305-01-172-5923?

There are 12 known substitutes for 5305-01-172-5923: 5305-01-170-4119, 5307-01-208-5421, 5307-01-227-2872 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2642-774-01 ITEM 31L1?

Key specifications for 2642-774-01 ITEM 31L1: Thread Direction: RIGHT-HAND; Criticality Code Justification: ZZZX; Departure From Cited Designator: MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS; Screw Material: NICKEL ALLOY. 10 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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