Hejnar F63 clamp, 3.25 inch Arca clamp, screw-knob quick release clamp, CNC aluminum camera clamp, Hejnar Photo USA, Arca clamp with relief groove, tongue-in-pocket clamp, RRS compatible, Markins, Wimberley, Kirk, Acratech, Photo Clam, Foba, Jobu Designs, Vanguard ABH, Benro

Upgrade your tripod system with the Hejnar Photo F63 Quick Release Clamp—a precision-engineered 3.25" Arca-Swiss compatible clamp built for photographers who demand reliability and modularity. Ideal for rugged field use, this clamp features dual mounting options, a captive-style knob, and a hard anodized finish.

The tongue-in-pocket design keeps jaws aligned and protects internal components from dust and grit. Relief grooves (2.6mm deep) support safety stops and prevent plate drop. Rounded edges help prevent injury and gear damage, while the one-piece aluminum knob ensures smooth operation and resists intrusion from sand or debris.

✅ Compatible With

Markins, Really Right Stuff (RRS), Arca Swiss, Wimberley, Kirk, Photo Clam, Foba, Benro, Vanguard ABH Series, Custom Brackets, Jobu Designs, Acratech, and other Arca-style systems.

🔧 Key Features

• Dual mounting: center socket fits 1/4"-20, M6, and 3⁄8”-16
• Two outside holes tapped 1/4"-20, spaced 45mm apart
• Captive knob: one-piece aluminum, dust-resistant
• Relief grooves: 2.6mm deep for plate safety stops
• Tongue-in-pocket design: protects internal parts, keeps jaws aligned
• Rounded edges: safer handling and gear protection
• Material: CNC-machined 6061-T6 aluminum
• Finish: Black hard coat anodized clamp, clear anodized knob
• Hardware: Stainless steel
• Made in USA 🇺🇸

📏 Specifications

• Length: 3.25"
• Weight: 4.7 oz (135g)
• Mounting holes: 1/4"-20 tapped, spaced 45mm apart
• Relief groove depth: 2.6mm

📦 Included

• One Hejnar F63 3.25" Quick Release Clamp
• One 1/4"-20 × 3/4" mounting screw
• Hex key for 1/4"-20 screw

🚚 Shipping Info

• Free USPS First Class Mail
• Tracking information provided
• Note: USPS delivery times may vary and tracking updates are not always daily
• For time-sensitive orders, select FedEx, UPS, or USPS Express Mail at checkout