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5266393 — EXTENDER,FORWARD PORT BULKHEAD

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

5266393: EXTENDER,FORWARD PORT BULKHEAD.

The EXTENDER,FORWARD PORT BULKHEAD is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1020 OR STEEL COMP 1025 OR STEEL COMP 1030 OVERALL, head_style: HEXAGON, head_height: 0.273 INCHES MINIMUM AND 0.289 INCHES MAXIMUM IN, thread_class: 2A A, thread_length: 0.641 INCHES MINIMUM AND 0.672 INCHES MAXIMUM IN, fastener_length: 0.719 INCHES MINIMUM AND 0.781 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-174-4296, 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
MRO→ MRO_GENERAL→ 5266393
NSN: 5306-00-174-4296
NIINs: 001744296, 012753791
FSC: 5306 — Bolts
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialSTEEL COMP 1020 OR STEEL COMP 1025 OR STEEL COMP 1030 OVERALL
head_styleHEXAGON
head_height0.273 INCHES MINIMUM AND 0.289 INCHES MAXIMUM IN
thread_class2A A
thread_length0.641 INCHES MINIMUM AND 0.672 INCHES MAXIMUM IN
fastener_length0.719 INCHES MINIMUM AND 0.781 INCHES MAXIMUM IN
washer_quantity1
special_featuresW/HEADER POINT
thread_directionRIGHT-HAND
surface_treatmentPHOSPHATE THREADS
width_between_flats0.551 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN
end_item_identificationAN/SLQ-48,VEHICLE,SUBMERSIBLE MINE LOCATOR,MNS
NSN5306-00-174-4296
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 5266393 · 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: 0.273 INCHES MINIMUM AND 0.289 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.719 INCHES MINIMUM AND 0.781 INCHES MAXIMUM IN
•
PRIMARY WASHER OUTSIDE DIAMETER: 0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.641 INCHES MINIMUM AND 0.672 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD ALL MATERIAL RESPONSES OVERALL
•
NOMINAL THREAD DIAMETER: 0.375 INCHES IN
•
HEAD STYLE: HEXAGON
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.273 INCHES MINIMUM AND 0.289 INCHES MAXIMUM IN
FASTENER LENGTH0.719 INCHES MINIMUM AND 0.781 INCHES MAXIMUM IN
PRIMARY WASHER OUTSIDE DIAMETER0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN
THREAD LENGTH0.641 INCHES MINIMUM AND 0.672 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD ALL MATERIAL RESPONSES OVERALL
NOMINAL THREAD DIAMETER0.375 INCHES IN
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
PRIMARY WASHER MATERIAL THICKNESS0.058 INCHES MINIMUM AND 0.066 INCHES MAXIMUM IN
WIDTH BETWEEN FLATS0.551 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 1
190599Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 5266393?
5266393 is a EXTENDER,FORWARD PORT BULKHEAD. It is classified as a MRO (MRO_GENERAL).
What parts can replace 5266393?
There is 1 known substitute for 5266393: 190599. Substitute compatibility should be verified for your specific system.
What is the NSN for 5266393?
5266393 is cataloged in the U.S. Government catalog under NSN 5306-00-174-4296. 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.