PartsTable
Technical Data Sheet
121-20 ✓ Verified by PartsTable
Hama · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

- As replacement for lost or defective original power supplies<br>- Mains supply of 110 V – 240 V suitable for use worldwide in conjunction with country-specific adapter<br>- Hook and loop cable tie enables good cable management without tangled cables<br>- Extra low energy consumption<br>- Ideal as a second power supply unit for use at home, in the office or during travel This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-185-8514, indicating validated use in U.S. government and defense logistics supply chains.

WHERE IT FITS
121-20
NSN: 5330-00-185-8514
FSC: 5330
CAGE: 88078 — CASHCO INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
thickness0.190 INCHES NOMINAL IN
head_styleKNURLED NO. 4
design_typeHAND
head_height0.500 INCHES NOMINAL IN
point_styleUNIVERSAL
point_length0.240 INCHES NOMINAL IN
thread_class2A A
usage_designFOR GLAZING WOOD SASHES; FOR APPLICATION WITH PUTTY KNIFE
bore_diameter0.1200 INCHES MINIMUM AND 0.1210 INCHES MAXIMUM IN
head_diameter1.250 INCHES NOMINAL IN
overall_width0.307 INCHES MINIMUM AND 0.317 INCHES MAXIMUM IN
NSN5330-00-185-8514
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 121-20 MFR: Hama ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
CRITICALITY CODE JUSTIFICATION: ZZZY
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D
TYPICAL APPLICATIONS
  • Server Internal Cabling
  • Data Center Cable Infrastructure
  • SAS/SATA Drive Connectivity
TECHNICAL CHARACTERISTICS (FLIS)
CRITICALITY CODE JUSTIFICATIONZZZY
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSCLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
12-120Interchangeable
interchangeable cross-reference
interchangeable
33Interchangeable
interchangeable cross-reference
interchangeable
TT-P-791Interchangeable
interchangeable cross-reference
interchangeable
A-A-378 TY2Interchangeable
interchangeable cross-reference
interchangeable
1452Interchangeable
interchangeable cross-reference
interchangeable
12130Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 121-20?
121-20 is a CABLE ASSEMBLY,SPECIAL PURPOSE,E manufactured by Hama.
What parts can replace 121-20?
There are 13 known substitutes for 121-20: 12-120, 33, TT-P-791 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 121-20?
121-20 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-185-8514. This indicates validated use in U.S. government and defense supply chains.
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