PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AES01C375A37AW9A91Screw,cap,hexagon Head

The American Society of Mechanical Engineers · NSN 5305-00-688-2111 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-688-2111 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-688-2111. Primary manufacturer part number: AES01C375A37AW9A91.
Features
  • Screw,cap,hexagon Head — FSC 5305
  • Thread Direction: RIGHT-HAND
  • Width Between Flats: 0.551 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN
  • Surface Treatment Document and Classification: ASTM B633 TY 2 SC 3 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
  • Thread Quantity Per Inch: 16
  • Nominal Thread Diameter: 0.375 INCHES IN
  • Minimum Tensile Strength: 150000 POUNDS PER SQUARE INCH LBS
  • Hardness Rating: 32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-00-688-2111, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is The American Society of Mechanical Engineers. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 18 commercial cross-references from 16 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5305-00-688-2111
Primary Part NumberAES01C375A37AW9A91
Item NameScrew,cap,hexagon Head
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerThe American Society of Mechanical Engineers
StatusCANCELLED
Thread DirectionRIGHT-HAND
Width Between Flats0.551 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN
Surface Treatment Document and ClassificationASTM B633 TY 2 SC 3 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
Thread Quantity Per Inch16
Nominal Thread Diameter0.375 INCHES IN
Minimum Tensile Strength150000 POUNDS PER SQUARE INCH LBS
Hardness Rating32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
Material Document and ClassificationSAE J429 GRADE 8 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A354 GRADE BD ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Head StyleHEXAGON
Fastener Length1.313 INCHES MINIMUM AND 1.375 INCHES MAXIMUM IN
Thread Class2A A
MaterialSTEEL OVERALL
Surface Finish63.0 MICROINCHES THREADS
Head Height0.226 INCHES MINIMUM AND 0.243 INCHES MAXIMUM IN
Thread Length1.000 INCHES MINIMUM AND 1.188 INCHES MAXIMUM IN
Surface TreatmentZINC AND CHROMATE OVERALL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 7
5305-00-018-6612 INTERCHANGEABLE
Screw,cap,hexagon Head
5945-00-133-528820-035800-000 INTERCHANGEABLE
Relay,electromagnetic
Kidde Technologies, Inc Dba Fenwal Safety Systems Div Fenwall Safety Systems
5331-00-194-3724 INTERCHANGEABLE
O-Ring
5120-00-288-9717 INTERCHANGEABLE
Pliers,retaining Ring
5360-00-518-5913186612 INTERCHANGEABLE
Spring
Lake Shore Systems, Inc.
3020-00-999-08599177314-10 INTERCHANGEABLE
Retainer,cooler Uni
Us Army Aviation and Missile Command
5975-01-475-2170 INTERCHANGEABLE
Cover,junction Box
Cross-Reference Index
Part NumberManufacturer
10383837 Nimikkeistokeskus Ncb Finland (FIN)
MS90728-63 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
AES01C375A37AW9A91 PRIMARY The American Society of Mechanical Engineers (USA)
1C6175P19 General Electric Company (USA)
9439636 General Motors Corp Chevrolet Motor Div Special Products Dept (USA)
5305006882111 E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales
B1821BH038C138N American National Standards Institute Incorporated Dba American National Standards Institute (USA)
B1821BH038C138N National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
2077-6809-001 Antenna Products Corporation Dba Antenna Products Corp (USA)
5305PL0655752 Jednolity Indeks Materialowy - Uniform Material Index (POL)
0014767 General Dynamics European, Land-Systems-Mowag Gmbh Dba Gdels (CHE)
186612 Zf Industrieantriebe Witten Gmbh (DEU)
17C622 Clark Equipment Co (USA)
358000 Charles Ross & Son Company Dba Ross Metal Fabricators (USA)
29420462 Century Data Systems (USA)
ASME B18.2.1 The American Society of Mechanical Engineers (USA)
303857 Wiba Zevenaar B.v. (NLD)
B1821AH038C138N American National Standards Institute Incorporated Dba American National Standards Institute (USA)
Related Parts
5305-00-018-6612INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
5945-00-133-5288INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
20-035800-000
5331-00-194-3724INTERCHANGEABLE
O-RING
5120-00-288-9717INTERCHANGEABLE
PLIERS,RETAINING RING
5360-00-518-5913INTERCHANGEABLE
SPRING
186612
3020-00-999-0859INTERCHANGEABLE
RETAINER,COOLER UNI
9177314-10
5975-01-475-2170INTERCHANGEABLE
COVER,JUNCTION BOX

Frequently Asked Questions

What is NSN 5305-00-688-2111?

NSN 5305-00-688-2111 is a Screw,cap,hexagon Head, manufactured by The American Society of Mechanical Engineers, classified under FSC 5305 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5305-00-688-2111?

NSN 5305-00-688-2111 has 18 cross-referenced part numbers: 10383837 (Nimikkeistokeskus Ncb Finland), MS90728-63 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), AES01C375A37AW9A91 (The American Society of Mechanical Engineers), 1C6175P19 (General Electric Company), 9439636 (General Motors Corp Chevrolet Motor Div Special Products Dept) and 13 more.

What NSN replaces 5305-00-688-2111?

There are 7 known substitutes for 5305-00-688-2111: 5305-00-018-6612, 5945-00-133-5288, 5331-00-194-3724 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of AES01C375A37AW9A91?

Key specifications for AES01C375A37AW9A91: Thread Direction: RIGHT-HAND; Width Between Flats: 0.551 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN; Surface Treatment Document and Classification: ASTM B633 TY 2 SC 3 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Thread Quantity Per Inch: 16. 18 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5305-00-688-2111 still in active supply?

NSN 5305-00-688-2111 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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