NSN 5305-01-641-5598 · NIIN 016415598 · Part number 803-7526222-16-OB-4-S-C-015
Naval Sea Systems Command · FSC 5305 — Screws · FSG 53 — Hardware and Abrasives · CAGE 53711
Government record, cited
NSN 5305-01-641-5598 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-641-5598. Manufacturer of record part number: 803-7526222-16-OB-4-S-C-015.
Nearby stock numbers← 5305-01-641-5575 Screw, Cap, Hexagon Head
·
5305-01-641-5605 Screw, Cap, Socket Head →
5305-01-641-5598 — Screws
Features
Screw,cap,socket Head — FSC 5305
Thread Length: 0.750 INCHES NOMINAL IN
Material Document and Classification: MIL-DTL-1222 TY-1, GR-500 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Nominal Thread Diameter: 0.500 INCHES IN
Thread Direction: RIGHT-HAND
Thread Class: 3A A
Thread Quantity Per Inch: 13
Material: NICKEL ALLOY OVERALL
Identification
NSN: 5305-01-641-5598
NIIN: 016415598
FSC: 5305 — Screws
FSG: 53 — Hardware and Abrasives
Primary part number: 803-7526222-16-OB-4-S-C-015
Manufacturer: Naval Sea Systems Command
General Description
The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-641-5598, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 8 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
5305-01-641-5598
Primary Part Number
803-7526222-16-OB-4-S-C-015
Item Name
Screw,cap,socket Head
FSC / FSG
5305 / 53 — Screws
Manufacturer
Naval Sea Systems Command
Status
ACTIVE
Thread Length
0.750 INCHES NOMINAL IN
Material Document and Classification
MIL-DTL-1222 TY-1, GR-500 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Nominal Thread Diameter
0.500 INCHES IN
Thread Direction
RIGHT-HAND
Thread Class
3A A
Thread Quantity Per Inch
13
Material
NICKEL ALLOY OVERALL
Thread Series Designator
UNIFIED NATIONAL COARSE (UNC)
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
⇄Related Items8
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5330-01-641-5604803-7526222-16-OB-4-S-C-008POSSIBLE MATCH
RETAINER,PACKING
Possible match (shared part number)Naval Sea Systems Command
5307-01-641-7744803-7526222-16-OB-4-S-C-012POSSIBLE MATCH
STUD,PLAIN
Possible match (shared part number)Naval Sea Systems Command
5340-01-641-8106803-7526222-16OB-4-S-C-014POSSIBLE MATCH
STOP,MECHANICAL
Possible match (shared part number)Naval Sea Systems Command
4820-01-641-8109803-7526222-16-OB-4-S-C-005POSSIBLE MATCH
RETAINER,SEAT,VALVE
Possible match (shared part number)Naval Sea Systems Command
5315-01-641-8651803-7526222-16-OB-4-S-C-020POSSIBLE MATCH
KEY,WOODRUFF
Possible match (shared part number)Naval Sea Systems Command
5330-01-641-8981803-7526222-16-OB-4-S-C-010POSSIBLE MATCH
RETAINER,PACKING
Possible match (shared part number)Naval Sea Systems Command
5305-01-642-0318803-7526222-16-OB-4-S-C-018POSSIBLE MATCH
SCREW,CAP,SOCKET HEAD
Possible match (shared part number)Naval Sea Systems Command
5305-01-642-1933803-7526222-16-OB-4-S-C-016POSSIBLE MATCH
SCREW,CAP,SOCKET HEAD
Possible match (shared part number)Naval Sea Systems Command
NSN 5305-01-641-5598 is a Screw,cap,socket Head, manufactured by Naval Sea Systems Command, classified under FSC 5305, Screws. Status: active.
What part numbers are listed for NSN 5305-01-641-5598?
NSN 5305-01-641-5598 has 1 manufacturer part number on file: 803-7526222-16-OB-4-S-C-015 (Naval Sea Systems Command).
What NSN replaces 5305-01-641-5598?
8 possible matches (shared part number, not a government interchangeability claim): 5330-01-641-5604, 5307-01-641-7744, 5340-01-641-8106. Verify interchangeability with system specifications before substitution.
What are the specifications of 803-7526222-16-OB-4-S-C-015?
Key specifications for 803-7526222-16-OB-4-S-C-015: Thread Length: 0.750 INCHES NOMINAL IN; Material Document and Classification: MIL-DTL-1222 TY-1, GR-500 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Nominal Thread Diameter: 0.500 INCHES IN; Thread Direction: RIGHT-HAND. 8 specifications are documented in the U.S. Government catalog.
Is NSN 5305-01-641-5598 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.