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6B256C — INSERT,SCREW THREAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

6B256C: INSERT,SCREW THREAD.

The INSERT,SCREW THREAD is a the manufacturer industrial component. Key specifications include length: 0.219 INCHES NOMINAL IN, material: STEEL COMP 303 OR STEEL COMP 303SE OR STEEL COMP 316 OVERALL, insert_size: 0.156 IN. DIA IN, knurl_length: 0.117 INCHES NOMINAL IN, thread_class: 2B, nominal_thread_size: 0.086 INCHES IN.

This part is cataloged in the U.S. Government catalog under NSN 5325-01-038-7288, 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
6B256C
NSN: 5325-01-038-7288
FSC: 5325 — Fastening Devices
CAGE: 07757 — STANDARD INSERT CO INC (USA)
SPECIFICATIONS
length0.219 INCHES NOMINAL IN
materialSTEEL COMP 303 OR STEEL COMP 303SE OR STEEL COMP 316 OVERALL
insert_size0.156 IN. DIA IN
knurl_length0.117 INCHES NOMINAL IN
thread_class2B
nominal_thread_size0.086 INCHES IN
thread_quantity_per_inch56
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
material_document_and_classificationMIK-S-7720 MIL SPEC ALL MATERIAL RESPONSES OVERALL
top_portion_unthreaded_outside_length0.031 INCHES NOMINAL IN
top_unthreaded_portion_outside_diameter0.142 INCHES NOMINAL IN
NSN5325-01-038-7288
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 6B256C · 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
•
LENGTH: 0.219 INCHES NOMINAL IN
•
KNURL LENGTH: 0.117 INCHES NOMINAL IN
•
INSERT SIZE: 0.156 IN. DIA IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIK-S-7720 MIL SPEC ALL MATERIAL RESPONSES OVERALL
•
NOMINAL THREAD SIZE: 0.086 INCHES IN
•
TOP UNTHREADED PORTION OUTSIDE DIAMETER: 0.142 INCHES NOMINAL IN
•
TOP PORTION UNTHREADED OUTSIDE LENGTH: 0.031 INCHES NOMINAL IN
•
THREAD CLASS: 2B
TECHNICAL CHARACTERISTICS
LENGTH0.219 INCHES NOMINAL IN
KNURL LENGTH0.117 INCHES NOMINAL IN
INSERT SIZE0.156 IN. DIA IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIK-S-7720 MIL SPEC ALL MATERIAL RESPONSES OVERALL
NOMINAL THREAD SIZE0.086 INCHES IN
TOP UNTHREADED PORTION OUTSIDE DIAMETER0.142 INCHES NOMINAL IN
TOP PORTION UNTHREADED OUTSIDE LENGTH0.031 INCHES NOMINAL IN
THREAD CLASS2B
THREAD QUANTITY PER INCH56
MATERIALSTEEL COMP 303 OR STEEL COMP 303SE OR STEEL COMP 316 OVERALL
OTHER ITEMS IN FSC 5325 — Fastening Devices
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5325-00-000-1884 5325-00-000-9988 5325-00-001-1567 5325-00-001-2043 5325-00-001-3842 5325-00-001-3858 5325-00-001-3871 5325-00-001-4317
SUBSTITUTES & CROSS-REFERENCES 1
IBC-256-6Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 6B256C?
6B256C is a INSERT,SCREW THREAD.
What parts can replace 6B256C?
There is 1 known substitute for 6B256C: IBC-256-6. Substitute compatibility should be verified for your specific system.
What is the NSN for 6B256C?
6B256C is cataloged in the U.S. Government catalog under NSN 5325-01-038-7288. 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.