NSN 5305-01-679-4485 · NIIN 016794485 · Part number AES20C625A50BB3M31
The American Society of Mechanical Engineers · FSC 5305 — Screws · FSG 53 — Hardware and Abrasives · CAGE 05047
Government record, cited
NSN 5305-01-679-4485 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-679-4485. Manufacturer of record part number: AES20C625A50BB3M31.
Material Document and Classification: ASTM 574 AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) SINGLE MATERIAL RESPONSE OVERALL
Nominal Thread Diameter: 0.625 INCHES IN
Thread Direction: RIGHT-HAND
Surface Treatment: ALUMINUM AND ZINC OVERALL
Thread Class: M20
Thread Quantity Per Inch: 1.500
Identification
NSN: 5305-01-679-4485
NIIN: 016794485
FSC: 5305 — Screws
FSG: 53 — Hardware and Abrasives
Primary part number: AES20C625A50BB3M31
Manufacturer: The American Society of Mechanical Engineers
General Description
The Screw,shoulder, cataloged under National Stock Number 5305-01-679-4485, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is The American Society of Mechanical Engineers. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government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
5305-01-679-4485
Primary Part Number
AES20C625A50BB3M31
Item Name
Screw,shoulder
FSC / FSG
5305 / 53 — Screws
Manufacturer
The American Society of Mechanical Engineers
Status
ACTIVE
Thread Length
1.50 INCHES NOMINAL IN
Material Document and Classification
ASTM 574 AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) SINGLE MATERIAL RESPONSE OVERALL
Nominal Thread Diameter
0.625 INCHES IN
Thread Direction
RIGHT-HAND
Surface Treatment
ALUMINUM AND ZINC OVERALL
Thread Class
M20
Thread Quantity Per Inch
1.500
Material
STEEL 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 Items6
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5310-01-699-4207AEN13C250000UC7A31POSSIBLE MATCH
NUT,PLAIN,HEXAGON
Possible match (shared part number)The American Society of Mechanical Engineers
5310-01-699-4208AEN13C375000UC7A11POSSIBLE MATCH
NUT,PLAIN,HEXAGON
Possible match (shared part number)The American Society of Mechanical Engineers
5305-01-699-9710AES20U625B00BB3L71POSSIBLE MATCH
SCREW,SHOULDER
Possible match (shared part number)The American Society of Mechanical Engineers
5305-01-699-9755AES20U750C00BB3L71POSSIBLE MATCH
SCREW,SHOULDER
Possible match (shared part number)The American Society of Mechanical Engineers
5305-01-699-9782AES01C375625CP1A11POSSIBLE MATCH
SCREW,CAP,HEXAGON HEAD
Possible match (shared part number)The American Society of Mechanical Engineers
5310-01-700-0259AEW20X80M000BD8A41POSSIBLE MATCH
WASHER,LOCK
Possible match (shared part number)The American Society of Mechanical Engineers
The American Society of Mechanical Engineers (USA)
Reference documents
Reference
Meaning
B18.24-2015
3/1Design control — primary reference
The American Society of Mechanical Engineers
Related Parts
5310-01-699-4207POSSIBLE MATCH
NUT,PLAIN,HEXAGON
AEN13C250000UC7A31
5310-01-699-4208POSSIBLE MATCH
NUT,PLAIN,HEXAGON
AEN13C375000UC7A11
5305-01-699-9710POSSIBLE MATCH
SCREW,SHOULDER
AES20U625B00BB3L71
5305-01-699-9755POSSIBLE MATCH
SCREW,SHOULDER
AES20U750C00BB3L71
5305-01-699-9782POSSIBLE MATCH
SCREW,CAP,HEXAGON HEAD
AES01C375625CP1A11
5310-01-700-0259POSSIBLE MATCH
WASHER,LOCK
AEW20X80M000BD8A41
Frequently Asked Questions
What is NSN 5305-01-679-4485?
NSN 5305-01-679-4485 is a Screw,shoulder, manufactured by The American Society of Mechanical Engineers, classified under FSC 5305, Screws. Status: active.
What part numbers are listed for NSN 5305-01-679-4485?
NSN 5305-01-679-4485 has 1 manufacturer part number on file: AES20C625A50BB3M31 (The American Society of Mechanical Engineers).
What NSN replaces 5305-01-679-4485?
6 possible matches (shared part number, not a government interchangeability claim): 5310-01-699-4207, 5310-01-699-4208, 5305-01-699-9710. Verify interchangeability with system specifications before substitution.
What are the specifications of AES20C625A50BB3M31?
Key specifications for AES20C625A50BB3M31: Thread Length: 1.50 INCHES NOMINAL IN; Material Document and Classification: ASTM 574 AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) SINGLE MATERIAL RESPONSE OVERALL; Nominal Thread Diameter: 0.625 INCHES IN; Thread Direction: RIGHT-HAND. 9 specifications are documented in the U.S. Government catalog.
Is NSN 5305-01-679-4485 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.