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ST3M453-9D19 — BOLT,CLOSE TOLERANCE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

ST3M453-9D19: BOLT,CLOSE TOLERANCE.

The BOLT,CLOSE TOLERANCE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, head_style: DOUBLE HEXAGON, grip_length: 1.178 INCHES MINIMUM AND 1.198 INCHES MAXIMUM IN, head_height: 0.318 INCHES MINIMUM AND 0.338 INCHES MAXIMUM IN, thread_class: 3A A, grip_diameter: 0.5610 INCHES MINIMUM AND 0.5615 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-357-1907, 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
ST3M453-9D19
NSN: 5306-00-357-1907
FSC: 5306 — Bolts
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
head_styleDOUBLE HEXAGON
grip_length1.178 INCHES MINIMUM AND 1.198 INCHES MAXIMUM IN
head_height0.318 INCHES MINIMUM AND 0.338 INCHES MAXIMUM IN
thread_class3A A
grip_diameter0.5610 INCHES MINIMUM AND 0.5615 INCHES MAXIMUM IN
thread_length0.699 INCHES MINIMUM AND 0.766 INCHES MAXIMUM IN
fastener_length1.897 INCHES MINIMUM AND 1.944 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
width_between_flats0.865 INCHES MINIMUM AND 0.877 INCHES MAXIMUM IN
nominal_thread_diameter0.562 INCHES IN
thread_quantity_per_inch18
NSN5306-00-357-1907
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: ST3M453-9D19 · 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
•
HEAD HEIGHT: 0.318 INCHES MINIMUM AND 0.338 INCHES MAXIMUM IN
•
FASTENER LENGTH: 1.897 INCHES MINIMUM AND 1.944 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.699 INCHES MINIMUM AND 0.766 INCHES MAXIMUM IN
•
SHANK UNTHREADED HOLE DIAMETER: 0.141 INCHES MINIMUM AND 0.146 INCHES MAXIMUM FIRST HOLE IN
•
NOMINAL THREAD DIAMETER: 0.562 INCHES IN
•
HEAD STYLE: DOUBLE HEXAGON
•
THREAD DIRECTION: RIGHT-HAND
•
SPECIFICATION/STANDARD DATA: 08524-B-17019 MANUFACTURERS STANDARD
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.318 INCHES MINIMUM AND 0.338 INCHES MAXIMUM IN
FASTENER LENGTH1.897 INCHES MINIMUM AND 1.944 INCHES MAXIMUM IN
THREAD LENGTH0.699 INCHES MINIMUM AND 0.766 INCHES MAXIMUM IN
SHANK UNTHREADED HOLE DIAMETER0.141 INCHES MINIMUM AND 0.146 INCHES MAXIMUM FIRST HOLE IN
NOMINAL THREAD DIAMETER0.562 INCHES IN
HEAD STYLEDOUBLE HEXAGON
THREAD DIRECTIONRIGHT-HAND
SPECIFICATION/STANDARD DATA08524-B-17019 MANUFACTURERS STANDARD
GRIP LENGTH1.178 INCHES MINIMUM AND 1.198 INCHES MAXIMUM IN
WIDTH BETWEEN FLATS0.865 INCHES MINIMUM AND 0.877 INCHES MAXIMUM IN
OTHER ITEMS IN FSC 5306 — Bolts
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5306-00-004-7044 5306-00-007-6129 5306-00-008-7899 5306-00-009-4739 5306-00-118-7332 5306-00-151-1777 5306-00-255-4507 5306-01-101-2459
SUBSTITUTES & CROSS-REFERENCES 6
VAL23029-9D19Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
US3204-9D19Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
11825-9D19Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
MB61-9D19Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
109453-9D19Reference document
Same NSN cross-reference
Reference document — Secondary reference
BM17019-9D19Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is ST3M453-9D19?
ST3M453-9D19 is a BOLT,CLOSE TOLERANCE.
What parts can replace ST3M453-9D19?
There are 6 known substitutes for ST3M453-9D19: VAL23029-9D19, US3204-9D19, 11825-9D19 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for ST3M453-9D19?
ST3M453-9D19 is cataloged in the U.S. Government catalog under NSN 5306-00-357-1907. 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.