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SS5112-839 — SCREW,CLOSE TOLERANCE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

SS5112-839: SCREW,CLOSE TOLERANCE.

The SCREW,CLOSE TOLERANCE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 632 FASTENER, head_style: CROWNED HEXAGON, grip_length: 2.438 INCHES MINIMUM AND 2.454 INCHES MAXIMUM IN, head_height: 0.251 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN, thread_class: 3A A, grip_diameter: 0.4986 INCHES MINIMUM AND 0.4991 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-169-8256, 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
SS5112-839
NSN: 5305-01-169-8256
FSC: 5305 — Screws
CAGE: 16258 — SPACE-LOK, INC. DBA SPACE-LOK INC DIV SPACE-LOK (USA)
SPECIFICATIONS
materialSTEEL COMP 632 FASTENER
head_styleCROWNED HEXAGON
grip_length2.438 INCHES MINIMUM AND 2.454 INCHES MAXIMUM IN
head_height0.251 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN
thread_class3A A
grip_diameter0.4986 INCHES MINIMUM AND 0.4991 INCHES MAXIMUM IN
thread_length0.395 INCHES MINIMUM AND 0.446 INCHES MAXIMUM IN
surface_finish32.0 MICROINCHES GRIP
fastener_length3.083 INCHES MINIMUM AND 3.103 INCHES MAXIMUM IN
locking_featureDETENT BALL GRIP
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
NSN5305-01-169-8256
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: SS5112-839 · 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
•
SURFACE FINISH: 32.0 MICROINCHES GRIP
•
HEAD HEIGHT: 0.251 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN
•
FASTENER LENGTH: 3.083 INCHES MINIMUM AND 3.103 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD LENGTH: 0.395 INCHES MINIMUM AND 0.446 INCHES MAXIMUM IN
•
SHANK UNTHREADED HOLE DIAMETER: 0.106 INCHES MINIMUM AND 0.116 INCHES MAXIMUM FIRST HOLE IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE FASTENER
TECHNICAL CHARACTERISTICS
SURFACE FINISH32.0 MICROINCHES GRIP
SURFACE FINISH32.0 MICROINCHES BEARING SURFACE OF HEAD
HEAD HEIGHT0.251 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN
FASTENER LENGTH3.083 INCHES MINIMUM AND 3.103 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH0.395 INCHES MINIMUM AND 0.446 INCHES MAXIMUM IN
SHANK UNTHREADED HOLE DIAMETER0.106 INCHES MINIMUM AND 0.116 INCHES MAXIMUM FIRST HOLE IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5629 ASSN STD SINGLE MATERIAL RESPONSE FASTENER
NOMINAL THREAD DIAMETER0.500 INCHES IN
HEAD STYLECROWNED HEXAGON
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-001-5016 5305-00-001-9160 5305-00-001-9629 5305-00-001-9742 5305-00-001-9768 5305-00-003-4306 5305-00-003-6694 5305-00-003-6753
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is SS5112-839?
SS5112-839 is a SCREW,CLOSE TOLERANCE.
What is the NSN for SS5112-839?
SS5112-839 is cataloged in the U.S. Government catalog under NSN 5305-01-169-8256. 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.