PartsTable
Technical Data Sheet
Download PDF

3188561-2 PIECE 7 — BOLT,INTERNAL WRENCHING

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

3188561-2 PIECE 7: BOLT,INTERNAL WRENCHING.

The BOLT,INTERNAL WRENCHING is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4340 OR STEEL COMP 8740 OR STEEL COMP 6150 OR STEEL COMP 3135 OR STEEL COMP 3140 OVERALL, hole_type: DRILLED, head_style: BEVEL-CONICAL, head_height: 0.333 INCHES MINIMUM AND 0.353 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.583 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-301-4069, 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
3188561-2 PIECE 7
NSN: 5306-01-301-4069
FSC: 5306 — Bolts
CAGE: 59364 — HONEYWELL INTERNATIONAL INC. DBA HONEYWELL INTERNATIONAL DIV AEROSPACE - TEMPE (WEST WARNER ROAD) (USA)
SPECIFICATIONS
materialSTEEL COMP 4340 OR STEEL COMP 8740 OR STEEL COMP 6150 OR STEEL COMP 3135 OR STEEL COMP 3140 OVERALL
hole_typeDRILLED
head_styleBEVEL-CONICAL
head_height0.333 INCHES MINIMUM AND 0.353 INCHES MAXIMUM IN
thread_class3A A
head_diameter0.583 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN
hole_diameter0.070 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN
hole_quantity6
thread_length0.663 INCHES MINIMUM AND 0.713 INCHES MAXIMUM IN
fastener_length0.985 INCHES MINIMUM AND 1.015 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
surface_treatmentCADMIUM AND CHROMATE OVERALL
NSN5306-01-301-4069
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 3188561-2 PIECE 7 · 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
•
WIDTH ACROSS FLATS: 0.376 INCHES MINIMUM AND 0.379 INCHES MAXIMUM IN
•
HEAD HEIGHT: 0.333 INCHES MINIMUM AND 0.353 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.985 INCHES MINIMUM AND 1.015 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416 TY 2 CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD LENGTH: 0.663 INCHES MINIMUM AND 0.713 INCHES MAXIMUM IN
•
HOLE CONFIGURATION STYLE: ROUND INTERNAL HEXAGON
•
NOMINAL THREAD DIAMETER: 0.375 INCHES IN
•
HEAD STYLE: BEVEL-CONICAL
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.376 INCHES MINIMUM AND 0.379 INCHES MAXIMUM IN
HEAD HEIGHT0.333 INCHES MINIMUM AND 0.353 INCHES MAXIMUM IN
FASTENER LENGTH0.985 INCHES MINIMUM AND 1.015 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416 TY 2 CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH0.663 INCHES MINIMUM AND 0.713 INCHES MAXIMUM IN
HOLE CONFIGURATION STYLEROUND INTERNAL HEXAGON
NOMINAL THREAD DIAMETER0.375 INCHES IN
HEAD STYLEBEVEL-CONICAL
THREAD DIRECTIONRIGHT-HAND
SPECIFICATION/STANDARD DATA80205-NAS146 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
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: Terminal item — stock exhausted; no further procurementNo demilitarization required
Ready to buy 3188561-2 PIECE 7?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 3188561-2 PIECE 7?
3188561-2 PIECE 7 is a BOLT,INTERNAL WRENCHING.
What is the NSN for 3188561-2 PIECE 7?
3188561-2 PIECE 7 is cataloged in the U.S. Government catalog under NSN 5306-01-301-4069. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 3188561-2 PIECE 7

✓ 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.