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EYEWEAR LEASH
SHOE TYING AID
NOVEL TENNIS STRINGING
CURB ALARM KIT
VENTILATED HAT
FOUNTAIN PEN DISPLAY CASE
FOUNTAIN PEN POCKET CADDY
FOUNTAIN PEN CLOSEOUTS
DRAWSTRING CLOSURES
 
B-Lok Chart of Products small
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B-LOK®-1B

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B-LOK®-2L

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B-LOK®-3C


 


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B-LOK-4A Thumbnail view

B-LOK®-4A
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for multi- view


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B-LOK®-5CHD




B-LOK®-5CHD
Vertical Perspective


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B-LOK-6 Thumbnail view

B-LOK®-6
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for multi- view

Click here for Detailed Instruction PDF
B-LOK® Logo image
ANNOUNCING NEW IMPROVEMENTS!spacer
spacerDRAWSTRING CLOSURES
Patent Nos. 3132390,4156574,4288891,5440788,6189186,6457214
& 8321999
'If you must say Made in the U.S.A.'

Tying (or untying) knots is obsolete!
Substitute for knots on most apparel, household and industrial cord applications
Easily eliminate unwanted slack on cords from 1/16" to 1/4" diameter
Great for seniors, arthritics or the knot-challenged
Proudly manufactured in the USA since 1961

As one of the original American drawstring closure manufacturers, Progresco continues to make the B-LOK® line entirely in America. As you may be aware, most molded cord closures are now made overseas. While they are generally a little less expensive, they also generally do not have the fit and polish of the original, domestically-made B-LOK® line, which is now finding application on higher-end products being advertised as made in the U.S.A. And instead of having to order at least 10M of the overseas closures, you can order as few as 500 of the Progresco closures from its authorized distributors (click on drop-down menu below). Here are the latest available models with OEM installation instructions:

PROUDLY MADE IN U.S.A.
PROUDLY MADE IN U.S.A.
COMING SOON...
B-LOK®-1B P/N 303-0010-1011 (White)
B-LOK®-1B P/N 303-0010-1012 (Black)
(packed 2500 per carton 5 equal bags)
Will be stocked in soft elastomeric material in opaque black, recommended for the dual ends of a drawstring on hats, caps, parkas or other wearing apparel near or about one's face. The 2 former small circular cord channels will be replaced by 1 long slit, so tipped cords are no longer required. To install, gently squeeze the 'ears' radially inward to temporarily open the slit and thread the cords thru (for larger untipped cords, use small screwdriver to push the folded ends thru), slide the lock to the desired location and release the ears to lock. Firmly tie off the loose ends of the cords. (To unlock, gently squeeze the ears again and slide the lock away from the load.) Recommended Load on the Lock ≤ 1Lb. 1/16" ≤ Cord Size ≤ 1/8", based on the recommended soft flexible braided cords.
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B-LOK®-2L P/N 303-0020-2076 (White) spacerB-LOK®-2L P/N 303-0020-1818 (Black)spacer (Packed 2500 per carton in 5 equal bags)spacerThanks to a new integral 'shim rib' on the Slide, now stays locked even when the cords are in a no-load condition. Made of Delrin (Acetal) stocked in opaque Black or White colors (custom logo inserts can be made), recommended for dual ends of a drawstring on flotation vests, small laundry or duffle bags and miscellaneous wearing apparel. To install, thread the cords thru the Cage at the end opposite to the tab. Snap the Slide into the Cage at the tab end. Slide the lock against the load and push the Slide inward to lock. Firmly tie the ends of the cord together. (To unlock, hold the Cage with one hand, pull the Slide outward with the other and slide the whole lock away from the load as desired.) Recommended Load on the Lock ≤ 25Lbs. 1/16" ≤ Cord Size ≤ 1/8", based on the recommended soft flexible braided cords.spacer

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B-LOK®-3C P/N 303-0030-6015 (White) spacerB-LOK®-3C P/N 303-0030-6025 (Black)spacer (Packed 2500 per carton in 5 equal bags)spacer

dotspacer
Pat. No. 8321999
dotspacerSelf-locks & stays that way even w/o tension
dotspacer
Lower center-of-gravity appearance avoids confusion spacerspacerspacerwith inferior knockoffs
dotspacerSpring arms w/squeeze tabs & narrower shaft allow for
spacerspacerre-threading on new cords w/o removing Slide from Cage
dotspacerAdditional rib added to Cage + notches at bottom so spacercage will lie flat when cords are under tensionspacer

Stocked in opaque Black or White Polypro (custom logo inserts can be made) recommended for the dual ends of a drawstring on larger bags, including laundry, duffel & sleeping, tiedowns for luggage, ladders & other cargo, soccerball tethers, etc. Also, the end of the Slide can accommodate a lanyard for remote opening or discharge. To install, thread cords thru throat of Cage. Snap Slide into Cage as shown. To enhance the self-locking action and retaining the cords in the locked position even without tension in the cords, optionally thread the cords thru the side channels provided in the new ringpull.
Recommended Load on the Lock ≤ 35Lbs. 1/8" ≤ Cord Size ≤ 3/16", based on the recommended soft flexible braided cords.spacer

B-LOK®-4A P/N 303-0040-6012 (Black) spacer(Packed 500 per carton in 5 equal bags)spacer
The cord holes are now larger and always stay in alignment for easier installation of the cords. Has a bigger spring housing to eliminate over-stressing, thus maintaining the same locking power over the life of the lock. And the spring housing 'balances' the plunger, providing the most distinctive-looking ball-type lock on the market. The first molded spherical spring-loaded cord lock on the market and still the strongest locking one, made in Acetal (so you don't have to remove prior to laundering) stocked in opaque Black (custom logo inserts can be made), recommended for the single or double ends of a drawstring on miscellaneous wearing apparel or bags. To install, depress the plunger until the holes line up, thread the cords thru (if using larger untipped cords, push folded endsthru with small screwdriver, slide the lock to the desired location and release the plunger to lock. Firmly tie off the free ends of the cord. (To unlock, just reverse this procedure in the obvious manner.) Recommended Load on the Lock ≤ 7Lbs. 1/16" ≤ Cord Size ≤ 1/8", based on therecommended soft flexible braided cords.

THE WORLD'S BEST FIBC CORD LOCK
for higher-end Flexible Intermediate Bulk Containers
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B-LOK®-5CHD P/N 303-0050-7063 (Manila color)spacer(Packed 500 per carton in 5 equal bags)spacerspacer

dotspacerPat. No. 8321999
dotspacerSelf-locks & stays that way even w/o tension spacerspacerspacerspacer
dotspacerLower center-of-gravity appearance avoids confusion
spacerspacer with inferior knockoffs
dotspacerSpring arms w/ squeeze tabs & narrower shaft allow for
spacerre-threading on new cords w/o removing Slide from Cage
dotspacerAdditional rib added to Cage plus beefed up notches at
spacerbottom so cage will lie flat when cords are under tension

Essentially a larger, heavier-duty version of the -3C, but stocked in opaque UV-stabilized Manila Polypro only (custom logo inserts can be made). This is the latest version of the original B-LOK-5 drawcord closure. Now resists breaking under prolonged high-load and high-heat conditions better than all previous models. And now least likely to accidentally unlock.

Installs same as -3C model. (Remember, optionally threading the cords thru the side channels in the ringpull further aids the self-locking action and retaining the cords in the locked position even without tension in the cords.) As before, the end of the Slide can accommodate a lanyard for remote opening. Recommended for large bulk bags, rigging for sailboats, tents & trees and other heavy-duty industrial applications. Recommended Load on the Lock ≤ 75Lbs. 3/16" ≤ Cord Size ≤ 1/4", based on the recommended soft flexible braided cords.



B-LOK®-5CHD
Internal View



B-LOK®-5CHD
Frontal View

COMING SOON...

B-LOK®-6A P/N 303-0060-1616 (Grey)spacer(Packed 100 per carton in 2 equal bags)spacer

(THE LIGHTER WEIGHT, LOWER COST SUBSTITUTE FOR METAL POSTAL ROPE LOCK)

THE BEST PLASTIC TAMPER-RESISTANT ROPE LOCK FOR MAIL BAGS, BANK BAGS AND COURIER BAGS

Will be stocked in Grey Delrin (Acetal)spacerThe single leaf springs will be relpaced by flat-angle sawtooth springs with virtually no permanent-set. Also, side notches will be added to the bottom sides of the cage so that it will lie flat against the load when there is tension in the cords.

The original drawstring bags are beginning to make a comeback against the current trend of zipper bags, which users are discovering have to be thrown out when the zippers are typically damaged in normal shipping and handling. But the drawstrings can be easily replaced without having to throw away the whole bags. So the sooner you adopt the inexpensive plastic B-LOK-6A, the sooner you will begin saving.


INSTRUCTIONS: TO INSTALL, starting with the Slide completely separated from the Cage, thread the cords thru the Cage. Insert the Slide in the Cage to the intermediate position, confirmed by the 'clicking' sound. TO OPERATE, slip the standard-size address label (1"x3.3") into the recessed area of the Cage. Holding the cords firmly in one hand, use the other to slide the Lock all the way inward so as to completely close the mouth of the bag and then push the Slide all the way into the Cage. Insert the desired common padlock or security seal. To unlock and loosen, remove the padlock or security seal and flick the head of the Slide outward with your thumb. Recommended Load on the Lock ≤ 75Lbs. Cord Size = 3/16", based on braided cotton cord currently used by the USPS.

B-LOK-6 Chart
B-LOK-6

NOTES:

1) Please be advised that Progresco Company now shares the same office facilities, including the same Tel lines, with Odyssey Mfg. Progresco will continue to manufacture and sell the B-LOKs with custom logos directly to OEMs requiring them. However, OEMs only needing the standard, off-the-shelf versions should continue to order them from the nearest authorized stocking distributors. Click on link on the right (business is done with them 'offline' only).

2) It is the responsibility of the end-using customer to determine the suitability of these locks for the specific application. Progresco's liability shall be limited to replacing parts due to faulty materials or workmanship.

3) If you are interested in switching to the ideal recommended soft, pre-cut, tipped cords at likely a lower cost than you are currently paying for cords that you are now hot-cutting or tying knots in, then we suggest you contact Bill Magill of Lea & Sachs at 877-296-7500 (toll free). In particular, we recommend style #4527 with 3/8" tips for the B-LOK-3C, style #4645 with 3/4" tips for the B-LOK-1B, - 4A, and style #4531-M with 1/2" tips for the B-LOK-5CHD. These are normally provided in White Polyester, but you can specify Polypropylene, Nylon, etc in most any common color.

4) B-LOK® is a U.S. registered trademark of Progresco for cord locks. Only Progresco is authorized to market and sell cord locks bearing or associated with the B-LOK® trademark in any form and any marks confusingly similar to the B-LOK® mark, including, but not limited to, B-Lock 3, B-Loc 3, B-Lock 5, and/or B-Loc 5. Thus, any such cord locks, either alone or installed on or in conjunction with other goods, marketed or sold by anyone other than Progresco and identified as bearing the B-LOK® trademark or any marks confusingly similar to the B-LOK® mark, that are sold or imported into the U.S. are subject to confiscation at U.S. Customs. 2) Since Progresco has discontinued manufacturing and selling the original B-LOK® 3A and B-LOK® 5 cord locks several years ago, new cord locks being made and sold under these appellations are counterfeits and thus also subject to confiscation at U.S. Customs.spacer


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