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Technical Data Sheet
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206344PC2 — BOLT,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

206344PC2: BOLT,MACHINE.

The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_type: DRILLED, head_style: SQUARE EXTENDED WASHER, grip_length: 0.083 INCHES MINIMUM AND 0.093 INCHES MAXIMUM IN, head_height: 0.375 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN, thread_class: 2A A. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-274-2563, 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
206344PC2
NSN: 5306-00-274-2563
FSC: 5306 — Bolts
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_typeDRILLED
head_styleSQUARE EXTENDED WASHER
grip_length0.083 INCHES MINIMUM AND 0.093 INCHES MAXIMUM IN
head_height0.375 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
thread_class2A A
hole_diameter0.062 INCHES NOMINAL IN
hole_quantity4
thread_length0.563 INCHES NOMINAL IN
fastener_length0.646 INCHES MINIMUM AND 0.656 INCHES MAXIMUM IN
hardness_rating20.0 ROCKWELL C MINIMUM AND 26.0 ROCKWELL C MAXIMUM OVERALL
special_featuresUNTHREADED PORTION OF SHANK 0.243 IN. BY 0.250 IN. DIA IN
NSN5306-00-274-2563
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 206344PC2 · 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
•
EXTENDED WASHER THICKNESS: 0.130 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.375 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.646 INCHES MINIMUM AND 0.656 INCHES MAXIMUM IN
•
EXTENDED WASHER DIAMETER: 0.433 INCHES MINIMUM AND 0.443 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.563 INCHES NOMINAL IN
•
HARDNESS RATING: 20.0 ROCKWELL C MINIMUM AND 26.0 ROCKWELL C MAXIMUM OVERALL
•
HOLE CONFIGURATION STYLE: SQUARE LONGITUDINAL HOLE
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-890 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
EXTENDED WASHER THICKNESS0.130 INCHES NOMINAL IN
HEAD HEIGHT0.375 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
FASTENER LENGTH0.646 INCHES MINIMUM AND 0.656 INCHES MAXIMUM IN
EXTENDED WASHER DIAMETER0.433 INCHES MINIMUM AND 0.443 INCHES MAXIMUM IN
THREAD LENGTH0.563 INCHES NOMINAL IN
HARDNESS RATING20.0 ROCKWELL C MINIMUM AND 26.0 ROCKWELL C MAXIMUM OVERALL
HOLE CONFIGURATION STYLESQUARE LONGITUDINAL HOLE
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-890 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.250 INCHES IN
FEATURES PROVIDEDFINISHED HEAD
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
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 206344PC2?
206344PC2 is a BOLT,MACHINE.
What is the NSN for 206344PC2?
206344PC2 is cataloged in the U.S. Government catalog under NSN 5306-00-274-2563. 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.