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591090 — NUT,LOCKING,JACK

✓ Government record, cited
LevelOne · BOLT SCREW
PRODUCT OVERVIEW

591090: NUT,LOCKING,JACK.

3m PS/2 and USB KVM Cable for KVM-0217US, KVM-0217DE, KVM-0831, KVM-1631, KVM-8901US, KVM-8901DE, KVM-8901FR, KVM-8901UK. Key specifications include end_item_identification: TYPE MMU/59E 20 TON HYDRAULIC TRIPOD JACK, general_characteristics_item_description: STEEL,SPEC QQ-S-634,CADMIUM PLATED,3.375 IN. DIA,0.625 IN.

THK IN. This part is cataloged in the U.S. Government catalog under NSN 5305-00-584-4848, 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
591090
NSN: 5305-00-584-4848
NIINs: 005844848, 009106149
FSC: 5305 — Screws
CAGE: 21450 — ARMY WEAPONS COMMAND ATTN AMSWE-REE-S (USA)
SPECIFICATIONS
end_item_identificationTYPE MMU/59E 20 TON HYDRAULIC TRIPOD JACK
general_characteristics_item_descriptionSTEEL,SPEC QQ-S-634,CADMIUM PLATED,3.375 IN. DIA,0.625 IN. THK IN
NSN5305-00-584-4848
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 591090 · LevelOne ⚠ 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: 0.221 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.312 INCHES MAXIMUM IN
•
FASTENER LENGTH: 2.500 INCHES NOMINAL IN
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THREAD LENGTH: 1.250 INCHES MINIMUM IN
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MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.312 INCHES IN
•
HEAD STYLE: FLAT CHAMFER
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.221 INCHES NOMINAL IN
HEAD HEIGHT0.312 INCHES MAXIMUM IN
FASTENER LENGTH2.500 INCHES NOMINAL IN
THREAD LENGTH1.250 INCHES MINIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.312 INCHES IN
HEAD STYLEFLAT CHAMFER
THREAD DIRECTIONRIGHT-HAND
SURFACE TREATMENTPASSIVATE OVERALL
INTERNAL DRIVE STYLEHEXAGON
SUBSTITUTES & CROSS-REFERENCES 1
FF-S-86Reference document
Same NSN cross-reference
Reference document — Identification reference
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 591090?
591090 is a NUT,LOCKING,JACK manufactured by LevelOne.
What parts can replace 591090?
There is 1 known substitute for 591090: FF-S-86. Substitute compatibility should be verified for your specific system.
What is the NSN for 591090?
591090 is cataloged in the U.S. Government catalog under NSN 5305-00-584-4848. 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.