Halder Clamping Nuts | Precision Fastening Solutions | Freer Tool

Halder clamping nuts are specialized nuts used in fixture and workholding setups to provide reliable clamping and repeatable fastening in machining and production environments (application dependent). Compared to general-purpose hex nuts, clamping nuts are often selected for fixture builds because they can offer advantages like improved seating, lower profile packaging, or compatibility with specific clamping element systems (per design / per listing). They’re commonly used anywhere you need consistent clamp-up with standardized components—especially in modular fixture systems.

Clamping Nuts According to DIN 6330 or DIN 6331 Standards - Halder clamping nuts are standard parts according to DIN or company standards. Clamping nuts are often also referred to as fixture nuts or extension nuts. Clamping nuts can be used in a wide range of industries for many applications, including connecting and clamping. In combination with T-nuts DIN 508 (EH 23010./23020.) and washers DIN 6340 (EH 23060.) they become the complete clamping bolts.

3020.) and washers DIN 6340 (EH 23060.) they become the complete clamping bolts.

The extensive product range includes various versions from stock:

• Fixture nuts, DIN 6330
• Collar nuts, DIN 6331
• Collar nuts with conical seat
• Extension nuts