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Technical Data Sheet
PartsTable / COMPONENT / 649877
649877 ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The BOLT,RIBBED SHOULDER is a the manufacturer industrial component. Key specifications include head_style: PAN NO. 2, rib_length: 0.120 INCHES NOMINAL IN, head_height: 0.160 INCHES NOMINAL IN, thread_class: 3A A, head_diameter: 0.820 INCHES NOMINAL IN, thread_length: 0.960 INCHES MINIMUM IN.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-732-8294, 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
649877
NSN: 5306-00-732-8294
FSC: 5306
CAGE: 34623 — AM GENERAL LLC (USA)
SPECIFICATIONS
materialSTEEL COMP 1023 OR STEEL COMP 1029 OR STEEL COMP 1030 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OR STEEL COMP 1022 OR STEEL COMP 1025 OVERALL
head_stylePAN NO. 2
rib_length0.120 INCHES NOMINAL IN
head_height0.160 INCHES NOMINAL IN
thread_class3A A
head_diameter0.820 INCHES NOMINAL IN
thread_length0.960 INCHES MINIMUM IN
shoulder_shapeRIBBED FIRST SHOULDER
fastener_length1.420 INCHES NOMINAL IN
hardness_rating3.0 ROCKWELL C MINIMUM AND 21.0 ROCKWELL C MAXIMUM OVERALL
shoulder_length0.340 INCHES MINIMUM AND 0.350 INCHES MAXIMUM FIRST SHOULDER IN
thread_directionLEFT-HAND
NSN5306-00-732-8294
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 649877 · 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: 0.160 INCHES NOMINAL IN
•
THREAD DIRECTION: LEFT-HAND
•
SHOULDER DIAMETER: 0.602 INCHES MINIMUM AND 0.605 INCHES MAXIMUM FIRST SHOULDER IN
•
RIB LENGTH: 0.120 INCHES NOMINAL IN
•
SHOULDER LENGTH: 0.340 INCHES MINIMUM AND 0.350 INCHES MAXIMUM FIRST SHOULDER IN
•
MINIMUM TENSILE STRENGTH: 110000 POUNDS PER SQUARE INCH LBS
•
NOMINAL THREAD DIAMETER: 0.500 INCHES IN
•
THREAD QUANTITY PER INCH: 20
TECHNICAL CHARACTERISTICS (FLIS)
HEAD HEIGHT0.160 INCHES NOMINAL IN
THREAD DIRECTIONLEFT-HAND
SHOULDER DIAMETER0.602 INCHES MINIMUM AND 0.605 INCHES MAXIMUM FIRST SHOULDER IN
RIB LENGTH0.120 INCHES NOMINAL IN
SHOULDER LENGTH0.340 INCHES MINIMUM AND 0.350 INCHES MAXIMUM FIRST SHOULDER IN
MINIMUM TENSILE STRENGTH110000 POUNDS PER SQUARE INCH LBS
NOMINAL THREAD DIAMETER0.500 INCHES IN
THREAD QUANTITY PER INCH20
MATERIALSTEEL COMP 1023 OR STEEL COMP 1029 OR STEEL COMP 1030 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OR STEEL COMP 1022 OR STEEL COMP 1025 OVERALL
HARDNESS RATING3.0 ROCKWELL C MINIMUM AND 21.0 ROCKWELL C MAXIMUM OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
33351Interchangeable
interchangeable cross-reference
interchangeable
AN5773-1AInterchangeable
interchangeable cross-reference
interchangeable
33551Interchangeable
interchangeable cross-reference
interchangeable
203-839Interchangeable
interchangeable cross-reference
interchangeable
730715Interchangeable
interchangeable cross-reference
interchangeable
012-1594Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 649877?
649877 is a BOLT,RIBBED SHOULDER.
What parts can replace 649877?
There are 11 known substitutes for 649877: 33351, AN5773-1A, 33551 and 8 more. Substitute compatibility should be verified for your specific system.
Is 649877 still available?
649877 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026