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SS5031-4-13 — BOLT,CLOSE TOLERANCE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

SS5031-4-13: BOLT,CLOSE TOLERANCE.

The BOLT,CLOSE TOLERANCE is a the manufacturer industrial component. Key specifications include head_style: DISHED HEXAGON, grip_length: 0.812 INCHES MINIMUM AND 0.828 INCHES MAXIMUM IN, head_height: 0.126 INCHES MINIMUM AND 0.141 INCHES MAXIMUM IN, thread_class: 3A A, grip_diameter: 0.2487 INCHES MINIMUM AND 0.2496 INCHES MAXIMUM IN, thread_length: 0.298 INCHES MINIMUM AND 0.319 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-181-0899, 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
SS5031-4-13
NSN: 5306-00-181-0899
FSC: 5306 — Bolts
CAGE: 78286 — SIKORSKY AIRCRAFT CORPORATION DBA SIKORSKY AIRCRAFT CORP (USA)
SPECIFICATIONS
head_styleDISHED HEXAGON
grip_length0.812 INCHES MINIMUM AND 0.828 INCHES MAXIMUM IN
head_height0.126 INCHES MINIMUM AND 0.141 INCHES MAXIMUM IN
thread_class3A A
grip_diameter0.2487 INCHES MINIMUM AND 0.2496 INCHES MAXIMUM IN
thread_length0.298 INCHES MINIMUM AND 0.319 INCHES MAXIMUM IN
fastener_length1.231 INCHES MINIMUM AND 1.251 INCHES MAXIMUM IN
special_featuresRETAINING ELEMENT IN SHANK
width_between_flats0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN
shank_unthreaded_hole_diameter0.076 INCHES MINIMUM AND 0.086 INCHES MAXIMUM FIRST HOLE IN
NSN5306-00-181-0899
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: SS5031-4-13 · 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: 0.126 INCHES MINIMUM AND 0.141 INCHES MAXIMUM IN
•
FASTENER LENGTH: 1.231 INCHES MINIMUM AND 1.251 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.298 INCHES MINIMUM AND 0.319 INCHES MAXIMUM IN
•
SHANK UNTHREADED HOLE DIAMETER: 0.076 INCHES MINIMUM AND 0.086 INCHES MAXIMUM FIRST HOLE IN
•
HEAD STYLE: DISHED HEXAGON
•
GRIP LENGTH: 0.812 INCHES MINIMUM AND 0.828 INCHES MAXIMUM IN
•
WIDTH BETWEEN FLATS: 0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN
•
GRIP DIAMETER: 0.2487 INCHES MINIMUM AND 0.2496 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.126 INCHES MINIMUM AND 0.141 INCHES MAXIMUM IN
FASTENER LENGTH1.231 INCHES MINIMUM AND 1.251 INCHES MAXIMUM IN
THREAD LENGTH0.298 INCHES MINIMUM AND 0.319 INCHES MAXIMUM IN
SHANK UNTHREADED HOLE DIAMETER0.076 INCHES MINIMUM AND 0.086 INCHES MAXIMUM FIRST HOLE IN
HEAD STYLEDISHED HEXAGON
GRIP LENGTH0.812 INCHES MINIMUM AND 0.828 INCHES MAXIMUM IN
WIDTH BETWEEN FLATS0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN
GRIP DIAMETER0.2487 INCHES MINIMUM AND 0.2496 INCHES MAXIMUM IN
SPECIAL FEATURESRETAINING ELEMENT IN SHANK
THREAD CLASS3A A
OTHER ITEMS IN FSC 5306 — Bolts
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5306-00-004-7044 5306-00-007-6129 5306-00-008-7899 5306-00-009-4739 5306-00-118-7332 5306-00-151-1777 5306-00-255-4507 5306-01-101-2459
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 SS5031-4-13?
SS5031-4-13 is a BOLT,CLOSE TOLERANCE.
What is the NSN for SS5031-4-13?
SS5031-4-13 is cataloged in the U.S. Government catalog under NSN 5306-00-181-0899. 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.