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Technical Data Sheet
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5L8957 — BOLT,WELDING

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

5L8957: BOLT,WELDING.

The BOLT,WELDING is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: PAN NO. 2, head_height: 2.6 MILLIMETERS MINIMUM AND 2.9 MILLIMETERS MAXIMUM MM, thread_class: 2A A, head_diameter: 21.6 MILLIMETERS MINIMUM AND 22.4 MILLIMETERS MAXIMUM MM, thread_length: 21.6 MILLIMETERS MINIMUM AND 22.4 MILLIMETERS MAXIMUM MM.

This part is cataloged in the U.S. Government catalog under NSN 5306-01-160-3934, 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
5L8957
NSN: 5306-01-160-3934
FSC: 5306 — Bolts
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_stylePAN NO. 2
head_height2.6 MILLIMETERS MINIMUM AND 2.9 MILLIMETERS MAXIMUM MM
thread_class2A A
head_diameter21.6 MILLIMETERS MINIMUM AND 22.4 MILLIMETERS MAXIMUM MM
thread_length21.6 MILLIMETERS MINIMUM AND 22.4 MILLIMETERS MAXIMUM MM
fastener_length24.60 MILLIMETERS MINIMUM AND 25.40 MILLIMETERS MAXIMUM MM
thread_directionRIGHT-HAND
internal_drive_styleW/O INTERNAL DRIVE
nominal_thread_diameter0.375 INCHES IN
thread_quantity_per_inch16
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
NSN5306-01-160-3934
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 5L8957 · 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: 2.6 MILLIMETERS MINIMUM AND 2.9 MILLIMETERS MAXIMUM MM
•
FASTENER LENGTH: 24.60 MILLIMETERS MINIMUM AND 25.40 MILLIMETERS MAXIMUM MM
•
THREAD LENGTH: 21.6 MILLIMETERS MINIMUM AND 22.4 MILLIMETERS MAXIMUM MM
•
NOMINAL THREAD DIAMETER: 0.375 INCHES IN
•
HEAD STYLE: PAN NO. 2
•
THREAD DIRECTION: RIGHT-HAND
•
INTERNAL DRIVE STYLE: W/O INTERNAL DRIVE
•
WELDING PROJECTION QUANTITY: 1 BEARING SURFACE OF HEAD
TECHNICAL CHARACTERISTICS
HEAD HEIGHT2.6 MILLIMETERS MINIMUM AND 2.9 MILLIMETERS MAXIMUM MM
FASTENER LENGTH24.60 MILLIMETERS MINIMUM AND 25.40 MILLIMETERS MAXIMUM MM
THREAD LENGTH21.6 MILLIMETERS MINIMUM AND 22.4 MILLIMETERS MAXIMUM MM
NOMINAL THREAD DIAMETER0.375 INCHES IN
HEAD STYLEPAN NO. 2
THREAD DIRECTIONRIGHT-HAND
INTERNAL DRIVE STYLEW/O INTERNAL DRIVE
WELDING PROJECTION QUANTITY1 BEARING SURFACE OF HEAD
THREAD CLASS2A A
THREAD QUANTITY PER INCH16
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
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 5L8957?
5L8957 is a BOLT,WELDING.
What is the NSN for 5L8957?
5L8957 is cataloged in the U.S. Government catalog under NSN 5306-01-160-3934. This indicates validated use in U.S. government and defense supply chains.
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