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PBF1652-3-7 — BOLT,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

PBF1652-3-7: BOLT,MACHINE.

The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, head_style: DOUBLE HEXAGON W/HOLE, grip_length: 0.4375 INCHES NOMINAL IN, head_height: 0.265 INCHES MINIMUM AND 0.285 INCHES MAXIMUM IN, thread_class: 3A A, thread_length: 0.399 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-693-2771, 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
PBF1652-3-7
NSN: 5306-01-693-2771
FSC: 5306 — Bolts
CAGE: 27624 — SPS TECHNOLOGIES LLC DBA PB FASTENERS DIV PB FASTENERS (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
head_styleDOUBLE HEXAGON W/HOLE
grip_length0.4375 INCHES NOMINAL IN
head_height0.265 INCHES MINIMUM AND 0.285 INCHES MAXIMUM IN
thread_class3A A
thread_length0.399 INCHES NOMINAL IN
fastener_length0.8365 INCHES NOMINAL IN
thread_directionRIGHT-HAND
width_between_flats0.251 INCHES NOMINAL IN
nominal_thread_diameter0.190 INCHES IN
extended_washer_diameter0.340 INCHES MINIMUM AND 0.350 INCHES MAXIMUM IN
thread_quantity_per_inch32
NSN5306-01-693-2771
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: PBF1652-3-7 · 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: 0.054 INCHES MINIMUM AND 0.074 INCHES MAXIMUM IN
•
HEAD HEIGHT: 0.265 INCHES MINIMUM AND 0.285 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.8365 INCHES NOMINAL IN
•
EXTENDED WASHER DIAMETER: 0.340 INCHES MINIMUM AND 0.350 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.399 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS2700 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.190 INCHES IN
•
HEAD STYLE: DOUBLE HEXAGON W/HOLE
TECHNICAL CHARACTERISTICS
EXTENDED WASHER THICKNESS0.054 INCHES MINIMUM AND 0.074 INCHES MAXIMUM IN
HEAD HEIGHT0.265 INCHES MINIMUM AND 0.285 INCHES MAXIMUM IN
FASTENER LENGTH0.8365 INCHES NOMINAL IN
EXTENDED WASHER DIAMETER0.340 INCHES MINIMUM AND 0.350 INCHES MAXIMUM IN
THREAD LENGTH0.399 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS2700 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.190 INCHES IN
HEAD STYLEDOUBLE HEXAGON W/HOLE
THREAD DIRECTIONRIGHT-HAND
GRIP LENGTH0.4375 INCHES NOMINAL IN
OTHER ITEMS IN FSC 5306 — Bolts
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5306-00-001-1276 5306-00-001-1949 5306-00-001-1988 5306-00-001-1989 5306-00-001-1990 5306-00-001-1991 5306-00-001-1993 5306-00-001-2017
SUBSTITUTES & CROSS-REFERENCES 1
ST3M607-3-7Reference document
Same NSN cross-reference
Reference document — Vendor item drawing 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 PBF1652-3-7?
PBF1652-3-7 is a BOLT,MACHINE.
What parts can replace PBF1652-3-7?
There is 1 known substitute for PBF1652-3-7: ST3M607-3-7. Substitute compatibility should be verified for your specific system.
What is the NSN for PBF1652-3-7?
PBF1652-3-7 is cataloged in the U.S. Government catalog under NSN 5306-01-693-2771. 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.