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788B163 — BOLT,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

788B163: BOLT,SHOULDER.

The BOLT,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL COMP 630 OVERALL, head_style: HEXAGON EXTENDED WASHER, head_height: 2.063 INCHES NOMINAL IN, thread_class: 3A A, thread_length: 0.935 INCHES NOMINAL IN, shoulder_shape: ROUND FIRST SHOULDER. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-437-5010, 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
788B163
NSN: 5306-01-437-5010
FSC: 5306 — Bolts
CAGE: 26741 — MECHANICAL TECHNOLOGY, INCORPORATED DIV MTI INSTRUMENTS INC (USA)
SPECIFICATIONS
materialSTEEL COMP 630 OVERALL
head_styleHEXAGON EXTENDED WASHER
head_height2.063 INCHES NOMINAL IN
thread_class3A A
thread_length0.935 INCHES NOMINAL IN
shoulder_shapeROUND FIRST SHOULDER
fastener_length3.750 INCHES NOMINAL IN
shoulder_length2.625 INCHES NOMINAL FIRST SHOULDER IN
thread_directionRIGHT-HAND
shoulder_diameter1.438 INCHES NOMINAL FIRST SHOULDER IN
width_between_flats1.250 INCHES NOMINAL IN
nominal_thread_diameter0.750 INCHES IN
NSN5306-01-437-5010
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 788B163 · 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: 1.503 INCHES NOMINAL IN
•
HEAD HEIGHT: 2.063 INCHES NOMINAL IN
•
FASTENER LENGTH: 3.750 INCHES NOMINAL IN
•
SHOULDER LENGTH: 2.625 INCHES NOMINAL FIRST SHOULDER IN
•
EXTENDED WASHER DIAMETER: 2.000 INCHES NOMINAL IN
•
SHOULDER DIAMETER: 1.438 INCHES NOMINAL FIRST SHOULDER IN
•
THREAD LENGTH: 0.935 INCHES NOMINAL IN
•
SHOULDER SHAPE: ROUND FIRST SHOULDER
TECHNICAL CHARACTERISTICS
EXTENDED WASHER THICKNESS1.503 INCHES NOMINAL IN
HEAD HEIGHT2.063 INCHES NOMINAL IN
FASTENER LENGTH3.750 INCHES NOMINAL IN
SHOULDER LENGTH2.625 INCHES NOMINAL FIRST SHOULDER IN
EXTENDED WASHER DIAMETER2.000 INCHES NOMINAL IN
SHOULDER DIAMETER1.438 INCHES NOMINAL FIRST SHOULDER IN
THREAD LENGTH0.935 INCHES NOMINAL IN
SHOULDER SHAPEROUND FIRST SHOULDER
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5604 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.750 INCHES 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

No substitute or cross-reference records for this part.

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 788B163?
788B163 is a BOLT,SHOULDER.
What is the NSN for 788B163?
788B163 is cataloged in the U.S. Government catalog under NSN 5306-01-437-5010. 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.