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MB148C-5-16A — BOLT,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

MB148C-5-16A: BOLT,SHOULDER.

The BOLT,SHOULDER is a the manufacturer industrial component. Key specifications include material: IRON ALLOY 660 OVERALL, head_style: HEXAGON, head_height: 0.203 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN, thread_class: 3A A, thread_length: 0.430 INCHES NOMINAL IN, shoulder_shape: ROUND ALL SHOULDERS. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-625-0771, 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
MB148C-5-16A
NSN: 5306-01-625-0771
FSC: 5306 — Bolts
CAGE: 73197 — HI-SHEAR CORPORATION (USA)
SPECIFICATIONS
materialIRON ALLOY 660 OVERALL
head_styleHEXAGON
head_height0.203 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN
thread_class3A A
thread_length0.430 INCHES NOMINAL IN
shoulder_shapeROUND ALL SHOULDERS
fastener_length1.430 INCHES MINIMUM AND 1.450 INCHES MAXIMUM IN
shoulder_length0.042 INCHES MINIMUM AND 0.083 INCHES MAXIMUM ALL SHOULDERS IN
thread_directionRIGHT-HAND
shoulder_diameter0.3025 INCHES MINIMUM AND 0.3125 INCHES MAXIMUM ALL SHOULDERS IN
surface_treatmentPASSIVATE OVERALL
width_between_flats0.553 INCHES MINIMUM AND 0.565 INCHES MAXIMUM IN
NSN5306-01-625-0771
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: MB148C-5-16A · 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: 0.203 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN
•
FASTENER LENGTH: 1.430 INCHES MINIMUM AND 1.450 INCHES MAXIMUM IN
•
SHOULDER LENGTH: 0.042 INCHES MINIMUM AND 0.083 INCHES MAXIMUM ALL SHOULDERS IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: AMS 2700 NATIONAL STD/SPEC SINGLE TREATMENT RESPONSE OVERALL
•
SHOULDER DIAMETER: 0.3025 INCHES MINIMUM AND 0.3125 INCHES MAXIMUM ALL SHOULDERS IN
•
THREAD LENGTH: 0.430 INCHES NOMINAL IN
•
SHOULDER SHAPE: ROUND ALL SHOULDERS
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5731 NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.203 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN
FASTENER LENGTH1.430 INCHES MINIMUM AND 1.450 INCHES MAXIMUM IN
SHOULDER LENGTH0.042 INCHES MINIMUM AND 0.083 INCHES MAXIMUM ALL SHOULDERS IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONAMS 2700 NATIONAL STD/SPEC SINGLE TREATMENT RESPONSE OVERALL
SHOULDER DIAMETER0.3025 INCHES MINIMUM AND 0.3125 INCHES MAXIMUM ALL SHOULDERS IN
THREAD LENGTH0.430 INCHES NOMINAL IN
SHOULDER SHAPEROUND ALL SHOULDERS
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5731 NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.3125 INCHES IN
HEAD STYLEHEXAGON
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
121503-5-16ACSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
GB511DL5-16ACSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is MB148C-5-16A?
MB148C-5-16A is a BOLT,SHOULDER.
What parts can replace MB148C-5-16A?
There are 2 known substitutes for MB148C-5-16A: 121503-5-16AC, GB511DL5-16AC. Substitute compatibility should be verified for your specific system.
What is the NSN for MB148C-5-16A?
MB148C-5-16A is cataloged in the U.S. Government catalog under NSN 5306-01-625-0771. 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.