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Technical Data Sheet
PartsTable / COMPONENT / 43-S-90591-1715
43-S-90591-1715 ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The SETSCREW is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OVERALL, head_style: HEADLESS (SETSCREW), point_style: CUP, thread_class: 2A A, thread_length: 0.188 INCHES MAXIMUM IN, fastener_length: 0.188 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-274-0089, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
43-S-90591-1715
NSN: 5305-00-274-0089
FSC: 5305
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
head_styleHEADLESS (SETSCREW)
point_styleCUP
thread_class2A A
thread_length0.188 INCHES MAXIMUM IN
fastener_length0.188 INCHES NOMINAL IN
hardness_rating45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
width_across_flats0.078 INCHES MINIMUM AND 0.079 INCHES MAXIMUM IN
internal_drive_styleHEXAGON
nominal_thread_diameter0.164 INCHES IN
NSN5305-00-274-0089
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 43-S-90591-1715 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
MATERIAL: STEEL COMP 303 OVERALL
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD DIAMETER: 0.164 INCHES IN
•
NONDEFINITIVE SPEC/STD DATA: G TYPE
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-763,CL 303,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
HARDNESS RATING: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL COMP 303 OVERALL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD DIAMETER0.164 INCHES IN
NONDEFINITIVE SPEC/STD DATAG TYPE
SURFACE TREATMENTPASSIVATE OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763,CL 303,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
HARDNESS RATING45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
WIDTH ACROSS FLATS0.078 INCHES MINIMUM AND 0.079 INCHES MAXIMUM IN
THREAD LENGTH0.188 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
MILS933TYPEGInterchangeable
interchangeable cross-reference
interchangeable
RR21Interchangeable
interchangeable cross-reference
interchangeable
AES32U312312UG6A11Interchangeable
interchangeable cross-reference
interchangeable
4061-2585Interchangeable
interchangeable cross-reference
interchangeable
3128786PC26Interchangeable
interchangeable cross-reference
interchangeable
563-4105-938325PCSP18Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 43-S-90591-1715?
43-S-90591-1715 is a SETSCREW.
What parts can replace 43-S-90591-1715?
There are 15 known substitutes for 43-S-90591-1715: MILS933TYPEG, RR21, AES32U312312UG6A11 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 43-S-90591-1715?
43-S-90591-1715 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-274-0089. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026