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Technical Data Sheet
PartsTable / COMPONENT / 56684-14
56684-14 ✓ 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 SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: STEEL COMP H11 OVERALL, head_style: ROUND, head_height: 0.193 INCHES MINIMUM AND 0.199 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.636 INCHES MINIMUM AND 0.656 INCHES MAXIMUM IN, thread_length: 0.730 INCHES MINIMUM AND 0.770 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-204-3305, 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
56684-14
NSN: 5305-01-204-3305
FSC: 5305
CAGE: 56878 — SPS TECHNOLOGIES, LLC DBA PB FASTENERS (USA)
SPECIFICATIONS
materialSTEEL COMP H11 OVERALL
head_styleROUND
head_height0.193 INCHES MINIMUM AND 0.199 INCHES MAXIMUM IN
thread_class3A A
head_diameter0.636 INCHES MINIMUM AND 0.656 INCHES MAXIMUM IN
thread_length0.730 INCHES MINIMUM AND 0.770 INCHES MAXIMUM IN
fastener_length0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM IN
hardness_rating40.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OVERALL
width_across_flats0.188 INCHES NOMINAL IN
internal_drive_styleHEXAGON
NSN5305-01-204-3305
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 56684-14 · 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
•
MINIMUM TENSILE STRENGTH: 260000 POUNDS PER SQUARE INCH LBS
•
THREAD DIRECTION: RIGHT-HAND
•
WIDTH ACROSS FLATS: 0.188 INCHES NOMINAL IN
•
THREAD QUANTITY PER INCH: 16
•
SURFACE TREATMENT: CADMIUM OVERALL
•
MINIMUM YIELD STRENGTH: 215000 POUNDS PER SQUARE INCH LBS
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: NAS672 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
•
HARDNESS RATING: 40.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
MINIMUM TENSILE STRENGTH260000 POUNDS PER SQUARE INCH LBS
THREAD DIRECTIONRIGHT-HAND
WIDTH ACROSS FLATS0.188 INCHES NOMINAL IN
THREAD QUANTITY PER INCH16
SURFACE TREATMENTCADMIUM OVERALL
MINIMUM YIELD STRENGTH215000 POUNDS PER SQUARE INCH LBS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONNAS672 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
HARDNESS RATING40.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONAMS6485 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.375 INCHES IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
1124-287-10Interchangeable
interchangeable cross-reference
interchangeable
E1124-287-10Interchangeable
interchangeable cross-reference
interchangeable
24735Interchangeable
interchangeable cross-reference
interchangeable
137168H1Interchangeable
interchangeable cross-reference
interchangeable
8TH4674Interchangeable
interchangeable cross-reference
interchangeable
634716-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 56684-14?
56684-14 is a SCREW,CAP,SOCKET HEAD.
What parts can replace 56684-14?
There are 11 known substitutes for 56684-14: 1124-287-10, E1124-287-10, 24735 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 56684-14?
56684-14 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-204-3305. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026