Solid Ceramic

Socket Flat Head Machine Screws & Bolts - U.S. Inch  | → Metric

stock ceramic flat head socket fasteners - U.S. InchU.S. inch flat head socket solid ceramic bolts and machine screws are fully threaded. Our solid ceramic fasteners are made in compliance with ISO 9001:2015 requirements and ideally suited for corrosive, extreme temperature locations and high voltage environments.

American Made. Fasteners shipped to you quickly, from available stock.

No Free Samples

*Available sizes, compositions and lengths vary and may be dependent upon material properties and performance characteristics. Please check our website for the most up-to-date information.

Flat head socket U.S. Inch fastener dimensional reference

To order fasteners:find the correct size, then select the composition you require.

    A B C
Size Com­posi­tion Head
Size Nom.
#0-80 alumina .117 .044 1/32"
#2-56 alumina .168 .064 3/64"
#4-40 alumina .218 .083 1/16"
#5-40 alumina .240 .090 5/64"
#6-32 alumina .263 .097 5/64"
#8-32 alumina .311 .112 3/32"
#10-24 alumina .359 .127 1/8"
#10-32 alumina .359 .127 1/8"
1/4"-20 alumina .480 .161 5/32"
1/4"-28 alumina .480 .161 5/32"
5/16"-18 alumina .600 .198 3/16"
3/8"- 16 aluminia .720 .234 7/32"

Dimensions Per ANSI B18.3-1998 Standard

Important Information -Please Read

Alumina & zirconia (PSZ) fasteners

  1. The pitch diameter of male threads will not exceed the max allowable according to Class 2. Minimum allowable pitch diameter may be below that of Class 2, conversely for female threads. Due to shrink factor variances, the stack up tolerance cannot be controlled on the pitch. It is recommended that you not engage more than 5 threads on any male fastener.
  2. No warranty with respect to torque strength and tensile strength is extended or implied. Ceramic materials are inherently brittle and display catastrophic failure if impacted or stressed beyond material limits.

Hex Head Fasteners

  1. Hex head metric sizes M5 and larger & ANSI hex head sizes 6-32 and larger will have a washer head face. Hex head metric sizes M4 and smaller & ANSI hex head sizes 5-40 and smaller will not have the washer head face.

Heat Resistant Corrosion Resistant Non-conductive Non Out-Gassing

Stock ceramic fasteners from Ceramco, Inc. Specializing in custom ceramic parts of complex geometries. Learn More.

Immediate Assistance is only a phone call away. If you have any questions or require additional information, please call Ceramco at: +1 (603) 447-2090, Monday - Friday, 8:00 am - 4:30 pm, U.S. Eastern.