Our studs and standoffs create fixed threaded connections and precise spacing between components. Fully and double-ended threaded studs (DIN 976 / 938 / 939) anchor into tapped holes and flanges, while hex and round standoffs and spacers set accurate gaps in electronics, panels, and enclosures. Available in steel, brass, and stainless.

Studs & Standoffs - Metric Sizes

What Are Studs and Standoffs?

Studs and standoffs are threaded components used to anchor, connect, and space parts. A stud is a rod threaded on one or both ends, used where a bolt is impractical for example, screwed permanently into a tapped hole so components can be located over it and secured with a nut, as on engine blocks and pipe flanges. Fully threaded studs (studding or threaded rod) provide a continuous thread that can be cut to length and locked with nuts anywhere along its length, giving great flexibility for suspension, bracketry, and adjustable assemblies.

A standoff also called a spacer or pillar is a threaded or plain component that holds two parts at a fixed distance apart. Male-female, female-female, and male-male standoffs allow circuit boards, panels, and covers to be stacked and separated precisely, which is essential in electronics and enclosure assembly for airflow, clearance, and insulation. At Metric Specialties we stock threaded studs, double-ended stud bolts, and hex and round standoffs and spacers in steel, brass, nylon, and A2/A4 stainless to cover mechanical, electrical, and structural spacing tasks.

Key Features and Benefits

• Fixed Threaded Anchors: Studs screw permanently into tapped holes and flanges, providing a reliable location and clamping point.
• Flexible Length: Fully threaded studding can be cut to length and locked with nuts anywhere along its run.
• Precise Spacing: Standoffs and spacers set accurate, repeatable gaps between boards, panels, and covers.
• Stacked Assembly: Male-female and female-female standoffs allow multi-layer mounting in electronics and enclosures.
• Material Choice: Steel, brass, nylon, and stainless cover mechanical strength, conductivity, and insulation needs.

Materials and Finishes

• Carbon Steel (Zinc Plated): General-purpose studs and standoffs for mechanical assembly.
• Brass: Conductive, corrosion-resistant standoffs for electronics and PCB mounting.
• Nylon: Insulating, non-conductive spacers for electrical isolation.
• Stainless Steel A2 / A4: Corrosion-resistant studs and standoffs for outdoor and marine use.

Standards Compliance

• DIN 976 Fully threaded studs (studding).
• DIN 938 / 939 Double-ended studs with metal-end engagement.
• ISO 261 ISO metric screw threads.

Common Applications and Industries

Studs are used extensively in engine assembly, pipe flanges, pressure vessels, and machinery, where a permanent threaded anchor allows components to be located and clamped with nuts. Fully threaded studding suspends and supports building services, brackets, and equipment, and can be cut to any length on site. Double-ended studs secure flanged and high-load joints across process and mechanical engineering.

Standoffs and spacers are fundamental to electronics and enclosure assembly, mounting and separating circuit boards, panels, and covers for clearance, airflow, and insulation. Brass standoffs provide conductive PCB grounding, nylon standoffs give electrical isolation, and metal standoffs support panels and displays in equipment across the electronics, telecoms, and instrumentation sectors.

How to Choose the Right Stud or Standoff

For anchoring, choose a stud that screws permanently into the tapped hole, a double-ended stud for flanges and engines, or fully threaded studding where you need to cut length and lock with nuts along its run. Match the thread, length, and strength grade to the joint and load.

For spacing, select the standoff configuration for your stack: male-female for stacking layers, female-female for joining with separate screws, and the correct height to set the gap you need. Choose the material by function brass for conductivity, nylon for insulation, steel for strength, and A2 or A4 stainless for corrosion resistance in exposed or hygienic environments.

Size Range and Availability

Studs available M3 through M36 including threaded rod up to 1m lengths; standoffs and spacers available M2.5 through M8 in hex and round profiles, across steel, brass, nylon, and stainless.

Why Buy From Metric Specialties

As dedicated metric fastener specialists, we hold studs & standoffs in the sizes, grades, and finishes that engineers actually need, backed by clear DIN and ISO standard references so you can specify with confidence. Every item is sourced to recognised standards and quality-controlled, giving you consistent thread fit, strength, and corrosion performance across repeat orders.

Whether you need a single item for a repair or bulk quantities for production, our range, technical guidance, and fast dispatch help you find the exact fastener for the job. If you are unsure which size, grade, or finish suits your application, our team can help you match the right product to your load, environment, and standard, so your assemblies are reliable and built to last.

Frequently Asked Questions (FAQs)

1. What is a stud used for?

A stud is used to provide a fixed threaded anchor where a bolt is impractically screwed into a tapped hole so components can be located over it and secured with a nut, as on engine blocks, pipe flanges, and machinery.

2. What is the difference between a stud and a threaded rod?

A stud is generally a specific length threaded on one or both ends for a set application, while threaded rod (studding) has a continuous thread along its full length and can be cut to any length needed.

3. What is a standoff or spacer?

A standoff (spacer, pillar) holds two components at a fixed distance apart. Threaded standoffs mount and separate circuit boards, panels, and covers precisely in electronics and enclosure assembly.

4. What is the difference between male-female and female-female standoffs?

A male-female standoff has a threaded stud at one end and a threaded hole at the other for stacking, while a female-female standoff has threaded holes at both ends for connecting with separate screws.

5. What material standoff should I use for electronics?

Brass standoffs offer conductivity and corrosion resistance for PCB grounding, while nylon standoffs provide electrical insulation and isolation. The choice depends on whether you need conduction or isolation.

6. Can threaded rod be cut to length?

Yes. Fully threaded studding is designed to be cut to length with a hacksaw or cutter, then deburred so nuts run freely. This makes it ideal for custom-length suspension and bracketry.

7. Are studs and standoffs available in stainless steel?

Yes. We stock A2 and A4 stainless studs, threaded rod, and standoffs for corrosion-resistant use in marine, outdoor, food, and chemical environments.

8. What are double-ended studs?

Double-ended studs (DIN 938/939) are threaded at both ends with a plain centre. One end screws permanently into a tapped hole; the other receives a nut, commonly used on flanges and engine assemblies.

9. How do I install a stud into a tapped hole?

Thread the stud in using a stud installation tool or two locked nuts, seating it to the correct depth for the metal-end type. The plain or nut end then receives the mating nut for assembly.

10. What sizes do you stock for studs and standoffs?

We stock studs M3 through M36, threaded rod up to 1m, and standoffs M2.5 through M8 in hex and round profiles, across steel, brass, nylon, and A2/A4 stainless.