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Technical Data Sheet
PartsTable / COMPONENT / 149 ITEM 27
149 ITEM 27 ✓ Verified by PartsTable
— · 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

The PIN,FAN is a the manufacturer thermal management component critical for maintaining optimal operating temperatures in enterprise hardware. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-972-8811, 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
149 ITEM 27
NSN: 5315-00-972-8811
FSC: 5315
CAGE: K7018 — WELLMAN GROUP (GBR)
SPECIFICATIONS
Part Number149 ITEM 27
NSN5315-00-972-8811
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 149 ITEM 27 · OEM ⚠ 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
TYPICAL APPLICATIONS
  • Server thermal management and cooling
  • Hot-swap fan replacement in production environments
  • Redundant cooling for high-availability systems
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
49549Interchangeable
interchangeable cross-reference
interchangeable
705880Interchangeable
interchangeable cross-reference
interchangeable
787Interchangeable
interchangeable cross-reference
interchangeable
14927Interchangeable
interchangeable cross-reference
interchangeable
D444Interchangeable
interchangeable cross-reference
interchangeable
GGG-D-751 TYBCL1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 149 ITEM 27?
149 ITEM 27 is a PIN,FAN.
What parts can replace 149 ITEM 27?
There are 17 known substitutes for 149 ITEM 27: 49549, 705880, 787 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 149 ITEM 27?
149 ITEM 27 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-972-8811. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026