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ST3M753-5-27 — BOLT,CLOSE TOLERANCE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

ST3M753-5-27: BOLT,CLOSE TOLERANCE.

The BOLT,CLOSE TOLERANCE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, head_style: SPLINE EXTENDED WASHER, grip_length: 1.6875 INCHES NOMINAL IN, head_height: 0.312 INCHES NOMINAL IN, point_style: FLAT, point_length: 0.05 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-705-3645, 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
ST3M753-5-27
NSN: 5306-01-705-3645
FSC: 5306 — Bolts
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
head_styleSPLINE EXTENDED WASHER
grip_length1.6875 INCHES NOMINAL IN
head_height0.312 INCHES NOMINAL IN
point_styleFLAT
point_length0.05 INCHES NOMINAL IN
thread_class3A A
grip_diameter0.3115 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM IN
thread_length0.551 INCHES NOMINAL IN
fastener_length2.2385 INCHES NOMINAL IN
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
NSN5306-01-705-3645
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: ST3M753-5-27 · 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
•
EXTENDED WASHER THICKNESS: 0.045 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.312 INCHES NOMINAL IN
•
POINT LENGTH: 0.05 INCHES NOMINAL IN
•
FASTENER LENGTH: 2.2385 INCHES NOMINAL IN
•
EXTENDED WASHER DIAMETER: 0.580 INCHES NOMINAL IN
•
THREAD LENGTH: 0.551 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS5629 AEROSPACE MATERIAL SPEC STD SINGLE MATERIAL RESPONSE OVERALL
•
POINT CHAMFER ANGLE: 45.0 DEGREES NOMINAL
TECHNICAL CHARACTERISTICS
EXTENDED WASHER THICKNESS0.045 INCHES NOMINAL IN
HEAD HEIGHT0.312 INCHES NOMINAL IN
POINT LENGTH0.05 INCHES NOMINAL IN
FASTENER LENGTH2.2385 INCHES NOMINAL IN
EXTENDED WASHER DIAMETER0.580 INCHES NOMINAL IN
THREAD LENGTH0.551 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS5629 AEROSPACE MATERIAL SPEC STD SINGLE MATERIAL RESPONSE OVERALL
POINT CHAMFER ANGLE45.0 DEGREES NOMINAL
NOMINAL THREAD DIAMETER0.3125 INCHES IN
HEAD STYLESPLINE EXTENDED WASHER
SUBSTITUTES & CROSS-REFERENCES 1
ST3M753Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
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 ST3M753-5-27?
ST3M753-5-27 is a BOLT,CLOSE TOLERANCE.
What parts can replace ST3M753-5-27?
There is 1 known substitute for ST3M753-5-27: ST3M753. Substitute compatibility should be verified for your specific system.
What is the NSN for ST3M753-5-27?
ST3M753-5-27 is cataloged in the U.S. Government catalog under NSN 5306-01-705-3645. 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.