PartsTable / COMPONENT / 81739
81739 — Technical Data Sheet
✓ Verified by PartsTable
Origin Storage · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW
This OM4 Duplex Multimode fibre optic cable is ideal for connecting 40GBase-SR4 and 100GBase-SR10, SFP+ and QSFP+ transceivers for 40 and 100 gigabit network connections. This cable provides backward compatibility with existing 50/125 equipment and the performance headroom required to support LED and VCSEL laser light sources, and 40 or 100 gigabit Ethernet applications in a data centre or wiring closet. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-023-9110, indicating validated use in U.S.
government and defense logistics supply chains.
WHERE IT FITS
81739
NSN: 5310-01-023-9110 FSC: 5310 CAGE: D9182 — ZF INDUSTRIEANTRIEBE WITTEN GMBH (DEU)
SPECIFICATIONS
material STEEL COMP 631 OVERALL load_rating 40.00 POUNDS NOMINAL LBS coil_quantity 6 hole_diameter 0.190 INCHES MINIMUM0.190 INCHES MINIMUM IN overall_height 0.030 INCHES NOMINAL0.030 INCHES NOMINAL IN inside_diameter 0.904 INCHES NOMINAL IN outside_diameter 0.375 INCHES MAXIMUM0.375 INCHES MAXIMUM IN style_designator CYLINDRICAL material_thickness 0.020 INCHES NOMINAL0.020 INCHES NOMINAL IN spring_free_length 2.160 INCHES NOMINAL IN coil_helix_direction RIGHT-HAND OR LEFT-HAND spring_deflection_rate 151.000 POUNDS PER INCH NOMINAL LBS NSN 5310-01-023-9110
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED
Hex NUT
CROSS-SECTION
WASHER OD: —
SIZE: —
MATERIAL: —
PN: 81739 · Origin Storage
⚠ VERIFY BEFORE ORDERING
Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint.
Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex
✓ BROKER TIP
Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion.
Always verify finish matches (plain, zinc, hot-dip galvanized)
PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
• HOLE DIAMETER: 0.190 INCHES MINIMUM0.190 INCHES MINIMUM IN
• STYLE DESIGNATOR: SPRING TENSION
• MATERIAL: STEEL COMP 302 OVERALL
• MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-5059 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
• OUTSIDE DIAMETER: 0.375 INCHES MAXIMUM0.375 INCHES MAXIMUM IN
• MATERIAL THICKNESS: 0.020 INCHES NOMINAL0.020 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
HOLE DIAMETER 0.190 INCHES MINIMUM0.190 INCHES MINIMUM IN STYLE DESIGNATOR SPRING TENSION MATERIAL STEEL COMP 302 OVERALL MATERIAL DOCUMENT AND CLASSIFICATION MIL-S-5059 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL OUTSIDE DIAMETER 0.375 INCHES MAXIMUM0.375 INCHES MAXIMUM IN OVERALL HEIGHT 0.030 INCHES NOMINAL0.030 INCHES NOMINAL IN MATERIAL THICKNESS 0.020 INCHES NOMINAL0.020 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
ST4 Interchangeable interchangeable cross-reference
interchangeable
BS08D Interchangeable interchangeable cross-reference
interchangeable
778-00002 Interchangeable interchangeable cross-reference
interchangeable
ST-3 Interchangeable interchangeable cross-reference
interchangeable
SBT-4U Interchangeable interchangeable cross-reference
interchangeable
SBL-4 Interchangeable interchangeable cross-reference
interchangeable
LIFECYCLE
Status CANCELLED
Availability —
RoHS Compliant EAR99 Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 81739?
81739 is a SWITCH SUBASSEMBLY manufactured by Origin Storage.
What parts can replace 81739?
There are 17 known substitutes for 81739: ST4, BS08D, 778-00002 and 14 more. Substitute compatibility should be verified for your specific system.
Is 81739 still available?
81739 is currently cancelled.