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72G620R — BOLT,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

72G620R: BOLT,MACHINE.

The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: DOUBLE HEXAGON EXTENDED WASHER, head_height: 0.375 INCHES MAXIMUM IN, thread_class: 3A A, thread_length: 1.062 INCHES NOMINAL IN, fastener_length: 1.220 INCHES MINIMUM AND 1.280 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-050-8031, 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
72G620R
NSN: 5306-00-050-8031
FSC: 5306 — Bolts
CAGE: 12603 — CLARK EQUIPMENT CO (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleDOUBLE HEXAGON EXTENDED WASHER
head_height0.375 INCHES MAXIMUM IN
thread_class3A A
thread_length1.062 INCHES NOMINAL IN
fastener_length1.220 INCHES MINIMUM AND 1.280 INCHES MAXIMUM IN
hardness_rating32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
features_providedFINISHED HEAD
surface_treatmentCADMIUM OR ZINC OVERALL
width_between_flats0.368 INCHES MINIMUM AND 0.377 INCHES MAXIMUM IN
nominal_thread_diameter0.375 INCHES IN
NSN5306-00-050-8031
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 72G620R · 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: 0.095 INCHES MINIMUM IN
•
HEAD HEIGHT: 0.375 INCHES MAXIMUM IN
•
FASTENER LENGTH: 1.220 INCHES MINIMUM AND 1.280 INCHES MAXIMUM IN
•
EXTENDED WASHER DIAMETER: 0.550 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN
•
THREAD LENGTH: 1.062 INCHES NOMINAL IN
•
HARDNESS RATING: 32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE GRADE 8 ASSN STD ALL MATERIAL RESPONSES OVERALL
•
NOMINAL THREAD DIAMETER: 0.375 INCHES IN
TECHNICAL CHARACTERISTICS
EXTENDED WASHER THICKNESS0.095 INCHES MINIMUM IN
HEAD HEIGHT0.375 INCHES MAXIMUM IN
FASTENER LENGTH1.220 INCHES MINIMUM AND 1.280 INCHES MAXIMUM IN
EXTENDED WASHER DIAMETER0.550 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN
THREAD LENGTH1.062 INCHES NOMINAL IN
HARDNESS RATING32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONSAE GRADE 8 ASSN STD ALL MATERIAL RESPONSES OVERALL
NOMINAL THREAD DIAMETER0.375 INCHES IN
FEATURES PROVIDEDFINISHED HEAD
HEAD STYLEDOUBLE HEXAGON EXTENDED WASHER
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 2
5686553Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
65MDJ1Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 72G620R?
72G620R is a BOLT,MACHINE.
What parts can replace 72G620R?
There are 2 known substitutes for 72G620R: 5686553, 65MDJ1. Substitute compatibility should be verified for your specific system.
What is the NSN for 72G620R?
72G620R is cataloged in the U.S. Government catalog under NSN 5306-00-050-8031. 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.