# Pins
4
www.mill-max.com
DATA SHEET
PRODUCT NUMBER: 851-93-004-10-001000
DESCRIPTION
Interconnect Machined Pin Socket
Standard Solder Tail Socket
Accepts .015"-.020" (0,381-0,508mm) dia leads
Rows: Single Row (1)
Pitch: .050" (1,270mm)
Clip Grid: 10
Pin Window Pattern 001
Plating Code: 93
Shell: 200 μ" Tin/Lead(93/7) over 100 μ" Nickel
Inner Contact: 30 μ" Gold over 50 μ" Nickel
Insulator Pin Clip Type: 000
Mounting Type: Through Hole Solder Mount
Insulator Information:
Nylon 46 High Temperature
CONTACT:
Pin Diameter Range .015"-.020" (0,381-0,508mm)
Material Beryllium Copper Current Rating (amps) 3.00
Fingers 3Compliancy .003" (0,76mm)
Length .080" (2,032mm) Group Code A
Product Number 851-93-004-10-001000 Data Sheet mill-max.com Updated 3/15/21 5:22 PM EDT - Page 1 of 3
CONTACT MATERIAL:
BERYLLIUM COPPER ALLOY 172 (UNS C17200) per ASTM B 194
Properties of BERYLLIUM COPPER:
Chemical composition: Cu 98.1%, Be 1.9%
Hardness: 36-43 Rockwell C
Density: .298 lbs/in3
Electrical Conductivity: 22% IACS*
Resistance: 10 mΩ Max
Operating Temperature: -55°C/+125°C
Melting point: 980°C/865°C (liquidus/solidus)
Stress Relaxation : 96% of stress remains after 1,000 hours @ 100 °C; 70% of stress remains after 1,000 hours @ 200 °C
*International Annealed Copper Standard, i.e. as a % of pure copper.
Since BeCu loses its spring properties over time at high temperatures; it is rated for continuous use up to 150°C. For applications up to
300°C, Mill-Max offers other materials. Contact Tech Support for more info.
†
†
LOOSE PIN/RECEPTACLE USED:
4890 (Brass Alloy)
BRASS ALLOY 360 per ASTM B 16, or 385 per ASTM B455
Properties of BRASS ALLOY 360 ASTM B 16:
Chemical composition: Cu 63% (max), Pb 3.7% (max)†, Fe .35% (max), Zn remainder
Temper as machined: H02/H04
Yield Strength: 25-45 ksi
Tensile strength: 57-80 ksi
Hardness as machined: 80-90 Rockwell B
Electrical conductivity: 26% IACS*
Melting point: 1000°C/840°C (liquidus/solidus)
Properties of BRASS ALLOY 385 ASTM B 455:
Chemical composition: Cu 60% (max), Pb 3.5% (max)†, Fe .35% (max), Zn remainder
Temper as machined: H02/H04
Yield Strength: 16 ksi(min)
Tensile strength: 48 ksi(min)
Hardness as machined: 80-90 Rockwell B
Electrical conductivity: 28% IACS*
Melting point: 1000°C/840°C (liquidus/solidus)
After machining, brass parts are often annealed (softened) for subsequent bending, swaging or crimping. A partial anneal down to 60±10 RB
is recommended for 90° bends, a full anneal down to 35±15 RB is recommended for pins or terminals that are swaged (riveted) to a circuit
board or crimped to a wire.
Note: Plated Brass parts need a barrier plate to prevent zinc diffusion, 50μ” min. nickel or 100μ” min. copper is recommended by ASTM B
545 and 579. ASTM B 488 also recommends a 50μ” min. nickel barrier plate beneath gold to prevent copper diffusion inherent with all
copper alloy products.
†RoHS-2 directive 2011/65/EU, exemption 6c allows up to 4% lead as an alloy agent in copper.
*International Annealed Copper Standard, i.e. as a % of pure copper.
INSULATOR MATERIAL:
Nylon 46 (Injection Molded)
Properties:
Product Number 851-93-004-10-001000 Data Sheet mill-max.com Updated 3/15/21 5:22 PM EDT - Page 2 of 3
High Temp. {30% glass filled} or {45% glass filled}, (black). Flammability rating UL 94 V-O
Material Heat Deflection Temp. (per ASTM D 648): 554°F (290°C) @ 264 psi
Note: Materials with HDT above 446°F (230°C) are considered suitable for “eutectic” reflow soldering. For
“lead-free” reflow soldering, choose materials with an HDT above 500°F (260°C).
STANDARD TOLERANCES ON PCB TERMINAL PINS & RECEPTACLES
Diameters +/-.002"
Lengths +/-.005"
Angles +/- 2°
ADDITIONAL NOTES & SPECIFICATIONS
In the interest of improved design, quality and performance , Mill-Max reserves the right to make changes in its specifications without prior
notice. Specifications and tolerances are provided wherever possible. The tolerance on dimensions of critical to function features is typically
held tighter than the stated standard tolerances, such as press-fits, holes and lengths affecting the coplanarity of SMT products. Due to the
wide variety of interconnects Mill-Max offers, the specific tolerances vary from product to product. If you need information regarding the
tolerance of a particular part, please contact Technical Services.
© 2021 Mill-Max Mfg. Corp.
190 Pine Hollow Rd , Oyster Bay, NY 11771, USA
Phone: 516.922.6000
Product Number 851-93-004-10-001000 Data Sheet mill-max.com Updated 3/15/21 5:22 PM EDT - Page 3 of 3
