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16A428-1H — BOLT,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

16A428-1H: BOLT,MACHINE.

The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include material: IRON ALLOY 651 OVERALL, hole_type: DRILLED, head_style: HEXAGON, grip_length: 0.125 INCHES NOMINAL IN, head_height: 0.156 INCHES NOMINAL IN, thread_class: 3A A. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-169-8347, 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
16A428-1H
NSN: 5306-00-169-8347
FSC: 5306 — Bolts
CAGE: 29372 — HOWMET GLOBAL FASTENING SYSTEMS INC. DIV TRIDAIR PRODUCTS (USA)
SPECIFICATIONS
materialIRON ALLOY 651 OVERALL
hole_typeDRILLED
head_styleHEXAGON
grip_length0.125 INCHES NOMINAL IN
head_height0.156 INCHES NOMINAL IN
thread_class3A A
hole_diameter0.156 INCHES NOMINAL IN
hole_quantity1
thread_length0.444 INCHES MINIMUM IN
fastener_length0.625 INCHES MINIMUM AND 0.672 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
features_providedFINISHED HEAD
NSN5306-00-169-8347
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 16A428-1H · 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: 0.156 INCHES NOMINAL IN
•
FASTENER LENGTH: 0.625 INCHES MINIMUM AND 0.672 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.444 INCHES MINIMUM IN
•
HOLE CONFIGURATION STYLE: HEXAGON FLATS
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5721 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.250 INCHES IN
•
FEATURES PROVIDED: FINISHED HEAD
•
HEAD STYLE: HEXAGON
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.156 INCHES NOMINAL IN
FASTENER LENGTH0.625 INCHES MINIMUM AND 0.672 INCHES MAXIMUM IN
THREAD LENGTH0.444 INCHES MINIMUM IN
HOLE CONFIGURATION STYLEHEXAGON FLATS
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5721 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.250 INCHES IN
FEATURES PROVIDEDFINISHED HEAD
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
GRIP LENGTH0.125 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 1
145-501-9001Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 16A428-1H?
16A428-1H is a BOLT,MACHINE.
What parts can replace 16A428-1H?
There is 1 known substitute for 16A428-1H: 145-501-9001. Substitute compatibility should be verified for your specific system.
What is the NSN for 16A428-1H?
16A428-1H is cataloged in the U.S. Government catalog under NSN 5306-00-169-8347. 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.