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20-057-5-48H — BOLT,SHEAR

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

20-057-5-48H: BOLT,SHEAR.

The BOLT,SHEAR is a the manufacturer industrial component. Key specifications include material: STEEL COMP E4340 OR STEEL COMP 4140 OR STEEL COMP 8740 OR STEEL COMP 8735 OR STEEL COMP 6150 OVERALL, hole_type: DRILLED, head_style: HEXAGON, grip_length: 2.990 INCHES MINIMUM AND 3.010 INCHES MAXIMUM IN, head_height: 0.156 INCHES MINIMUM AND 0.171 INCHES MAXIMUM IN, thread_class: 3A A. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-077-1003, 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
20-057-5-48H
NSN: 5306-01-077-1003
FSC: 5306 — Bolts
CAGE: 27624 — SPS TECHNOLOGIES LLC DBA PB FASTENERS DIV PB FASTENERS (USA)
SPECIFICATIONS
materialSTEEL COMP E4340 OR STEEL COMP 4140 OR STEEL COMP 8740 OR STEEL COMP 8735 OR STEEL COMP 6150 OVERALL
hole_typeDRILLED
head_styleHEXAGON
grip_length2.990 INCHES MINIMUM AND 3.010 INCHES MAXIMUM IN
head_height0.156 INCHES MINIMUM AND 0.171 INCHES MAXIMUM IN
thread_class3A A
grip_diameter0.3110 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM IN
hole_diameter0.070 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN
hole_quantity3
thread_length0.444 INCHES MINIMUM AND 0.494 INCHES MAXIMUM IN
surface_finish63.0 MICROINCHES BEARING SURFACE OF HEAD
fastener_length3.454 INCHES MINIMUM AND 3.484 INCHES MAXIMUM IN
NSN5306-01-077-1003
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 20-057-5-48H · 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: 32.0 MICROINCHES THREADS
•
HEAD HEIGHT: 0.156 INCHES MINIMUM AND 0.171 INCHES MAXIMUM IN
•
FASTENER LENGTH: 3.454 INCHES MINIMUM AND 3.484 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416 TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD LENGTH: 0.444 INCHES MINIMUM AND 0.494 INCHES MAXIMUM IN
•
HARDNESS RATING: 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL
TECHNICAL CHARACTERISTICS
SURFACE FINISH32.0 MICROINCHES THREADS
SURFACE FINISH63.0 MICROINCHES GRIP
SURFACE FINISH63.0 MICROINCHES BEARING SURFACE OF HEAD
HEAD HEIGHT0.156 INCHES MINIMUM AND 0.171 INCHES MAXIMUM IN
FASTENER LENGTH3.454 INCHES MINIMUM AND 3.484 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416 TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH0.444 INCHES MINIMUM AND 0.494 INCHES MAXIMUM IN
HARDNESS RATING36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL
HOLE CONFIGURATION STYLEHEXAGON CORNERS
NOMINAL THREAD DIAMETER0.312 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 1
NAS1305-48HReference document
Same NSN cross-reference
Reference document — Secondary reference
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 20-057-5-48H?
20-057-5-48H is a BOLT,SHEAR.
What parts can replace 20-057-5-48H?
There is 1 known substitute for 20-057-5-48H: NAS1305-48H. Substitute compatibility should be verified for your specific system.
What is the NSN for 20-057-5-48H?
20-057-5-48H is cataloged in the U.S. Government catalog under NSN 5306-01-077-1003. 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.