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72688-6-35 — BOLT,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

72688-6-35: BOLT,SHOULDER.

The BOLT,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL COMP E4340 OR STEEL COMP 8740 OVERALL, head_style: HEXAGON, head_height: 0.194 INCHES MINIMUM AND 0.214 INCHES MAXIMUM IN, thread_class: 3A A, thread_length: 0.472 INCHES MINIMUM AND 0.498 INCHES MAXIMUM IN, shoulder_shape: ROUND FIRST SHOULDER. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-126-1173, 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
72688-6-35
NSN: 5306-01-126-1173
FSC: 5306 — Bolts
CAGE: 56878 — SPS TECHNOLOGIES, LLC DBA PB FASTENERS (USA)
SPECIFICATIONS
materialSTEEL COMP E4340 OR STEEL COMP 8740 OVERALL
head_styleHEXAGON
head_height0.194 INCHES MINIMUM AND 0.214 INCHES MAXIMUM IN
thread_class3A A
thread_length0.472 INCHES MINIMUM AND 0.498 INCHES MAXIMUM IN
shoulder_shapeROUND FIRST SHOULDER
fastener_length2.664 INCHES MINIMUM AND 2.684 INCHES MAXIMUM IN
hardness_rating40.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
locking_featureDETENT RING GRIP
shoulder_length2.186 INCHES MINIMUM AND 2.192 INCHES MAXIMUM FIRST SHOULDER IN
thread_directionRIGHT-HAND
shoulder_diameter0.373 INCHES MINIMUM AND 0.374 INCHES MAXIMUM FIRST SHOULDER IN
NSN5306-01-126-1173
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 72688-6-35 · 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: 0.194 INCHES MINIMUM AND 0.214 INCHES MAXIMUM IN
•
FASTENER LENGTH: 2.664 INCHES MINIMUM AND 2.684 INCHES MAXIMUM IN
•
SHOULDER LENGTH: 2.186 INCHES MINIMUM AND 2.192 INCHES MAXIMUM FIRST SHOULDER IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416 TY 2 CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
SHOULDER DIAMETER: 0.373 INCHES MINIMUM AND 0.374 INCHES MAXIMUM FIRST SHOULDER IN
•
THREAD LENGTH: 0.472 INCHES MINIMUM AND 0.498 INCHES MAXIMUM IN
•
SHOULDER SHAPE: ROUND FIRST SHOULDER
•
HARDNESS RATING: 40.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.194 INCHES MINIMUM AND 0.214 INCHES MAXIMUM IN
FASTENER LENGTH2.664 INCHES MINIMUM AND 2.684 INCHES MAXIMUM IN
SHOULDER LENGTH2.186 INCHES MINIMUM AND 2.192 INCHES MAXIMUM FIRST SHOULDER IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416 TY 2 CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SHOULDER DIAMETER0.373 INCHES MINIMUM AND 0.374 INCHES MAXIMUM FIRST SHOULDER IN
THREAD LENGTH0.472 INCHES MINIMUM AND 0.498 INCHES MAXIMUM IN
SHOULDER SHAPEROUND FIRST SHOULDER
HARDNESS RATING40.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
SHANK UNTHREADED HOLE DIAMETER0.071 INCHES MINIMUM AND 0.091 INCHES MAXIMUM FIRST HOLE IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5000 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE OVERALL
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 72688-6-35?
72688-6-35 is a BOLT,SHOULDER.
What is the NSN for 72688-6-35?
72688-6-35 is cataloged in the U.S. Government catalog under NSN 5306-01-126-1173. 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.