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STD.2182-D-55 — BOLT,CLOSE TOLERANCE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

STD.2182-D-55: BOLT,CLOSE TOLERANCE.

The BOLT,CLOSE TOLERANCE is a the manufacturer industrial component. Key specifications include material: TITANIUM ALLOY UNS R54520 OVERALL, head_style: HEXAGON, grip_length: 0.550 INCHES MINIMUM AND 0.613 INCHES MAXIMUM IN, head_height: 0.105 INCHES MINIMUM AND 0.115 INCHES MAXIMUM IN, thread_class: 3A A, grip_diameter: 0.1895 INCHES MINIMUM AND 0.1904 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-101-8143, 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
STD.2182-D-55
NSN: 5306-01-101-8143
FSC: 5306 — Bolts
CAGE: 03950 — NAVAL INVENTORY CONTROL POINT MECHANICSBURG (USA)
SPECIFICATIONS
materialTITANIUM ALLOY UNS R54520 OVERALL
head_styleHEXAGON
grip_length0.550 INCHES MINIMUM AND 0.613 INCHES MAXIMUM IN
head_height0.105 INCHES MINIMUM AND 0.115 INCHES MAXIMUM IN
thread_class3A A
grip_diameter0.1895 INCHES MINIMUM AND 0.1904 INCHES MAXIMUM IN
thread_length0.275 INCHES MINIMUM AND 0.285 INCHES MAXIMUM IN
fastener_length0.888 INCHES MINIMUM AND 0.898 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OVERALL
width_between_flats0.339 INCHES MINIMUM AND 0.344 INCHES MAXIMUM IN
nominal_thread_diameter0.190 INCHES IN
NSN5306-01-101-8143
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: STD.2182-D-55 · 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: 0.105 INCHES MINIMUM AND 0.115 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.888 INCHES MINIMUM AND 0.898 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: STD2167 FSCM 56387 MFR REF SINGLE TREATMENT RESPONSE OVERALL
•
THREAD LENGTH: 0.275 INCHES MINIMUM AND 0.285 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: NAS621 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.190 INCHES IN
•
HEAD STYLE: HEXAGON
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.105 INCHES MINIMUM AND 0.115 INCHES MAXIMUM IN
FASTENER LENGTH0.888 INCHES MINIMUM AND 0.898 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONSTD2167 FSCM 56387 MFR REF SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH0.275 INCHES MINIMUM AND 0.285 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONNAS621 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.190 INCHES IN
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
GRIP LENGTH0.550 INCHES MINIMUM AND 0.613 INCHES MAXIMUM IN
WIDTH BETWEEN FLATS0.339 INCHES MINIMUM AND 0.344 INCHES MAXIMUM IN
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: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is STD.2182-D-55?
STD.2182-D-55 is a BOLT,CLOSE TOLERANCE.
What is the NSN for STD.2182-D-55?
STD.2182-D-55 is cataloged in the U.S. Government catalog under NSN 5306-01-101-8143. 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.