Custom-Length Barrel Clamp Bolt
Description
Technical Parameters
Custom-Length Barrel Clamp Bolts are made-to-drawing fasteners intended for assemblies that use a compatible barrel nut or clamping mechanism. They are specified for applications where standard bolt lengths do not meet the required installation dimensions, thread engagement, or mounting clearance.
The bolt can be customized by overall length, threaded length, shank diameter, thread specification, head configuration, material, and surface finish. These dimensions are defined according to the customer's engineering drawing and the requirements of the mating components.
For OEM manufacturers, equipment builders, and industrial fastener distributors, custom-length production provides an option for sourcing non-standard fastening components for new equipment, replacement parts, and established assembly designs.
Key Features
Custom Length and Thread Geometry
Overall length and threaded length can be specified separately to match the available installation space and required thread engagement. Shank dimensions and head geometry are defined by the approved drawing.
Material Options
Carbon steel and stainless steel are potential material options. The final grade should be selected according to the required mechanical properties, corrosion exposure, operating temperature, and applicable product standards.
Thread and Surface Finish Selection
Metric or inch-based threads can be specified according to the mating component. Surface finish options may include zinc plating for suitable carbon steel fasteners and passivation for applicable stainless steel grades. Coating selection should account for the operating environment and any dimensional or corrosion-resistance requirements.
Drawing-Based Manufacturing
Custom orders can be evaluated using dimensioned engineering drawings or CAD files. Critical dimensions, thread requirements, and inspection criteria should be agreed upon before production.
Technical Specifications
|
Parameter |
Specification Details |
|
Thread Diameters |
M5 to M16 (Unified coarse/fine threads available upon request) |
|
Length Range |
Custom-engineered per drawing (Standard overall length: 30mm – 200mm) |
|
Material Grades |
Carbon Steel (Grade 8.8, 10.9, 12.9), Stainless Steel (AISI 304 / 316) |
|
Surface Treatments |
Zinc Plating (Clear/Yellow), Dacromet, Geomet, Passivated (for stainless steel) |
|
Head Types |
Socket Head Cap, Hex Head, Slotted Barrel Bolt Interface |
|
Manufacturing Process |
Cold forging, CNC precision machining, thread rolling, heat treatment |
|
Quality & Compliance |
ISO 9001, RoHS, REACH compliant |
Applications
Industrial Clamping Assemblies
Custom lengths can accommodate clamping assemblies with defined mounting distances or non-standard fastening geometry. The mating barrel nut and clamp design must be confirmed before selection.
OEM Equipment Assembly
Equipment manufacturers can specify bolt dimensions to match their own housings, brackets, and assembly layouts, reducing the need to adapt the design around an unsuitable standard length.
Automotive and Machinery Components
Where the original design uses a compatible barrel-style fastening arrangement, custom-length bolts may be considered for assembly production or replacement-part sourcing. Suitability for exhaust systems, turbocharger connections, or other high-temperature and high-load locations requires application-specific verification.
Maintenance and Replacement Parts
Dimensionally matched bolts can be specified when an existing component needs replacement and standard catalog dimensions are unsuitable. A drawing or verified sample helps establish the required geometry.
Key Selection Factors
Overall Length and Thread Engagement
Specify the total length and identify the measurement reference points on the drawing. Confirm the required thread engagement, available installation clearance, and the position of any unthreaded section.
Thread Compatibility
Provide the nominal diameter, pitch, thread system, and tolerance class where required. Matching the nominal diameter alone does not establish compatibility with the mating nut.
Material and Mechanical Requirements
Specify the required material grade and mechanical property class where applicable. The selection should reflect the actual load, assembly design, temperature, and environment rather than relying on tensile-strength labels alone.
Surface Treatment
Identify corrosion exposure, coating requirements, and any restrictions on coating thickness. Thread fit and dimensional requirements should be reviewed alongside the selected finish.
Inspection Requirements
Identify critical dimensions, thread gauges, material documentation, and any special inspection requirements in the purchase specification. Agree on acceptance criteria before ordering.
Our Certificate
Frequently Asked Questions
Q: Can barrel clamp bolts be manufactured to custom drawings?
A: Custom dimensions can be evaluated from engineering drawings or CAD files. Manufacturing feasibility depends on the specified geometry, material, thread, tolerances, and production requirements.
Q: Which files should be submitted for a quotation?
A: Provide a dimensioned PDF drawing or a compatible CAD file, such as STEP or IGES, together with material, surface finish, quantity, and inspection requirements.
Q: Can metric and inch threads be specified?
A: Metric and Unified inch threads can be specified for evaluation. The exact thread standard, diameter, pitch, and tolerance requirements must be confirmed before production.
Q: What quality documents are available?
A: Material certificates and dimensional inspection reports should be agreed upon with the supplier before ordering. Availability and document scope depend on the actual production and inspection arrangements.
Request a Quote
Send your dimensioned drawing or CAD file, required material, thread specification, surface finish, order quantity, and inspection requirements. These details allow the supplier to evaluate manufacturability, confirm the specification, and prepare a quotation.
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