PEEK Screws, Bolts, Nuts & Washers
Explore thread sizes, heads and installation details for custom PEEK fasteners. A useful quote identifies grade, thread form, length, quantity and service conditions.
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Illustrative 3D product renderingSpecify the screw, joint and thread—not just the material.
Identify the product form, required grade and intended use before confirming material selection or production scope.
Plastic fasteners with the right installation details.
PEEK fasteners may be specified where electrical insulation, chemical environments or weight are important. Polymer threads and joints require their own load, creep and temperature evaluation; metal fastener torque recommendations should not be applied by default.
- Machine screws and bolts: identify thread, head and engagement length
- Nuts and washers: define mating hardware and bearing surface
- Custom dimensions or forms: supply a drawing and quantity
Illustrative product renderWhat to include in the purchase specification.
Confirm the required dimensions, material grade and quantity for an accurate quotation.
| RFQ input | What to specify and why it matters |
|---|---|
| Fastener type | Machine screw, bolt, nut, stud, threaded rod, washer or nonstandard form. |
| Metric thread & pitch | State M size and pitch, or supply the required ISO/ANSI thread drawing; common RFQ examples include M3, M4, M5, M6 and M8, not a current stock promise. |
| Head, drive & length | Socket head, hex head, pan, countersunk or slotted; define under-head length and head clearance. |
| PEEK material grade | Virgin PEEK or specified filled grade. Fibre-filled grades need grade-specific assessment for thread details. |
| Joint loading | Assembly torque, clamp force, number of retightening cycles, mating thread material and service temperatures. |
| Commercial requirements | Piece quantity by size, finish, inspection method, packaging and desired documentation. |
Dimensions, grades and availability are confirmed for each quotation.
Thread, length and head dimensions to label.
Use this dimension sketch to make your first inquiry complete. Confirm all tolerances, fit requirements and acceptance criteria on your own drawing.
Choose by joint design—not the nominal thread alone.
Product-specific guidance to help engineers and buyers avoid a quotation that looks attractive but is technically incomplete.
M size is not the whole thread specification
Thread pitch, tolerance class, engagement and mating part determine compatibility. Send the matching standard or thread detail.
Creep and temperature in a clamped joint
PEEK is a polymer; load retention and assembly torque require application validation rather than copying metal screw values.
Head-drive features and quality checks
For small screws, clarify drive recess, head height, thread gauge method and any cosmetic restrictions.
Order by drawing and size matrix
A mixed RFQ benefits from a table listing thread size, length, head style and quantities for each line item.
Specify the complete mating assembly
Washer OD/ID and nut engagement length should be compatible with bolt size and contact surface.
Electrical, chemical or contamination needs
Record actual media, temperature and any approved material grade or documentation requirement.
Thread and joint specification matrix
Use dimensional callouts and joint-duty requirements rather than assuming that an arbitrary metric size is in stock or suitable for a specific tightening torque.
| Part family | Drawing / specification fields | Joint design question | Inspection / quotation scope |
|---|---|---|---|
| Machine screw / bolt | Thread designation and pitch, effective length, head/drive geometry. | What clamp load and thermal cycling must the joint accommodate? | Thread fit, head geometry, quantity and inspection method. |
| Nut | Thread form, thickness, across-flats or other profile. | Which mating bolt and joint materials are used? | Thread engagement, profile and mating sample if applicable. |
| Washer / spacer | ID/OD/thickness, flatness and edge condition. | Which load-bearing/contact surfaces are functional? | Dimensional acceptance and surface conditions. |
| Custom fastener | 2D/3D part drawing, under-head features, grade. | Does the design need special tooling or a cut/turned route? | Drawing revision, risk review and quantity breaks. |
Thread designations such as M × pitch identify RFQ requirements. Confirm availability, thread fit and joint requirements for your order.
Fastener size-list & RFQ checklist.
Use this checklist to prepare your product-specific RFQ.
Check before sending your inquiry
References for material selection and stock-shape specifications. Confirm the required grade, dimensions and availability for your order.
Frequently asked questions.
Direct answers to common procurement decisions and engineering details.
Are PEEK screws interchangeable with stainless steel screws?
Not automatically. Thread dimensions may be compatible but stiffness, creep, load capacity and assembly torque differ. Evaluate the complete joint.
Can I quote multiple lengths and sizes together?
Yes. Provide a line-by-line size list with thread, pitch, length, head type and quantity for each item.
Are M3 to M8 PEEK fasteners always in stock?
Availability is confirmed by grade, thread size, length and quantity at quotation.
What file should I send for a custom PEEK screw?
A dimensioned drawing is preferred, with thread standard, head dimensions, use conditions and quantity.