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78852-13 — BOLT,INTERNAL WRENCHING

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

78852-13: BOLT,INTERNAL WRENCHING.

The BOLT,INTERNAL WRENCHING is a the manufacturer industrial component. Key specifications include material: IRON ALLOY 660 OVERALL, head_height: 0.185 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.303 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN, thread_length: 0.270 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN, surface_finish: 63.0 MICROINCHES BEARING SURFACE OF HEAD. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-236-0445, 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
78852-13
NSN: 5306-01-236-0445
FSC: 5306 — Bolts
CAGE: 56878 — SPS TECHNOLOGIES, LLC DBA PB FASTENERS (USA)
SPECIFICATIONS
materialIRON ALLOY 660 OVERALL
head_height0.185 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
thread_class3A A
head_diameter0.303 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
thread_length0.270 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN
surface_finish63.0 MICROINCHES BEARING SURFACE OF HEAD
fastener_length0.780 INCHES MINIMUM AND 0.812 INCHES MAXIMUM IN
special_featuresOPTIONAL THREAD SERIES PER MIL-S-8879 OR MIL-S-7742
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
width_across_flats0.1562 INCHES MINIMUM AND 0.1587 INCHES MAXIMUM IN
internal_drive_styleHEXAGON
NSN5306-01-236-0445
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 78852-13 · 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
•
SURFACE FINISH: 63.0 MICROINCHES GRIP
•
WIDTH ACROSS FLATS: 0.1562 INCHES MINIMUM AND 0.1587 INCHES MAXIMUM IN
•
HEAD HEIGHT: 0.185 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.780 INCHES MINIMUM AND 0.812 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD LENGTH: 0.270 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE FINISH63.0 MICROINCHES GRIP
SURFACE FINISH63.0 MICROINCHES BEARING SURFACE OF HEAD
SURFACE FINISH63.0 MICROINCHES THREADS
WIDTH ACROSS FLATS0.1562 INCHES MINIMUM AND 0.1587 INCHES MAXIMUM IN
HEAD HEIGHT0.185 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
FASTENER LENGTH0.780 INCHES MINIMUM AND 0.812 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH0.270 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
FIRST DIAMETER FROM HEAD0.131 INCHES MINIMUM AND 0.141 INCHES MAXIMUM 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 4
D792298-10-34Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
AIC485-59Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
FIT7076-59Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
M-20885-8Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 78852-13?
78852-13 is a BOLT,INTERNAL WRENCHING.
What parts can replace 78852-13?
There are 4 known substitutes for 78852-13: D792298-10-34, AIC485-59, FIT7076-59 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 78852-13?
78852-13 is cataloged in the U.S. Government catalog under NSN 5306-01-236-0445. 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.