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MHSS1AC1S — SETSCREW

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

MHSS1AC1S: SETSCREW.

The SETSCREW is a the manufacturer industrial component. Key specifications include material: STEEL COMP 302 OVERALL, head_style: HEADLESS (SETSCREW), point_style: CUP, spline_width: 0.011 INCHES MINIMUM AND 0.012 INCHES MAXIMUM IN, thread_class: 3A A, fastener_length: 0.062 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-173-3531, 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
MHSS1AC1S
NSN: 5305-01-173-3531
FSC: 5305 — Screws
CAGE: 1CFF7 — BRISTOL, INC. DBA REMOTE AUTOMATION SOLUTIONS DIV REMOTE AUTOMATION SOLUTIONS (USA)
SPECIFICATIONS
materialSTEEL COMP 302 OVERALL
head_styleHEADLESS (SETSCREW)
point_styleCUP
spline_width0.011 INCHES MINIMUM AND 0.012 INCHES MAXIMUM IN
thread_class3A A
fastener_length0.062 INCHES NOMINAL IN
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
internal_drive_styleFOUR SPLINE
spline_major_diameter0.034 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN
spline_minor_diameter0.025 INCHES MINIMUM AND 0.026 INCHES MAXIMUM IN
nominal_thread_diameter0.086 INCHES IN
NSN5305-01-173-3531
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: MHSS1AC1S · 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
•
SPLINE MINOR DIAMETER: 0.025 INCHES MINIMUM AND 0.026 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.062 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
SPLINE WIDTH: 0.011 INCHES MINIMUM AND 0.012 INCHES MAXIMUM IN
•
SPLINE MAJOR DIAMETER: 0.034 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN
•
NOMINAL THREAD DIAMETER: 0.086 INCHES IN
•
HEAD STYLE: HEADLESS (SETSCREW)
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
SPLINE MINOR DIAMETER0.025 INCHES MINIMUM AND 0.026 INCHES MAXIMUM IN
FASTENER LENGTH0.062 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SPLINE WIDTH0.011 INCHES MINIMUM AND 0.012 INCHES MAXIMUM IN
SPLINE MAJOR DIAMETER0.034 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.086 INCHES IN
HEAD STYLEHEADLESS (SETSCREW)
THREAD DIRECTIONRIGHT-HAND
POINT STYLECUP
SURFACE TREATMENTPASSIVATE OVERALL
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-001-5016 5305-00-001-9160 5305-00-001-9629 5305-00-001-9742 5305-00-001-9768 5305-00-003-4306 5305-00-003-6694 5305-00-003-6753
SUBSTITUTES & CROSS-REFERENCES 1
MHSS1A2C1SReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is MHSS1AC1S?
MHSS1AC1S is a SETSCREW.
What parts can replace MHSS1AC1S?
There is 1 known substitute for MHSS1AC1S: MHSS1A2C1S. Substitute compatibility should be verified for your specific system.
What is the NSN for MHSS1AC1S?
MHSS1AC1S is cataloged in the U.S. Government catalog under NSN 5305-01-173-3531. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.